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authorLinus Torvalds <torvalds@linux-foundation.org>2023-04-27 18:28:08 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2023-04-27 18:28:08 +0300
commit32f7ad0fbe7521de2a5e8f79c33d46110247fd7c (patch)
tree5f774c2b3bf6a6a2f3f934a1701da0a2d23b3936 /drivers
parent7e7757876f258d99266e7b3c559639289a2a45fe (diff)
parentcf03e2956af307dc25e8c41fd4cffe44482a6ec1 (diff)
downloadlinux-32f7ad0fbe7521de2a5e8f79c33d46110247fd7c.tar.xz
Merge tag 'drm-next-2023-04-27' of git://anongit.freedesktop.org/drm/drm
Pull drm fixes from Dave Airlie: "A bit out of routine fixes pull for rc1. There's a build breakage on some platforms due to ttm, this has that fix + qaic uapi removal + minor panel fixes. ttm: - Fix TTM build on archs where PMD_SHIFT is not constant qaic: - Revert uAPI from accel/qaic panel: - Improve error handling in nt35950 - Fix double unregister in otm8009a when removing the driver" * tag 'drm-next-2023-04-27' of git://anongit.freedesktop.org/drm/drm: drm/panel: novatek-nt35950: Only unregister DSI1 if it exists drm/panel: otm8009a: Set backlight parent to panel device drm/panel: novatek-nt35950: Improve error handling drm/ttm: revert "Reduce the number of used allocation orders for TTM pages" Revert "accel/qaic: Add mhi_qaic_cntl"
Diffstat (limited to 'drivers')
-rw-r--r--drivers/accel/qaic/Makefile1
-rw-r--r--drivers/accel/qaic/mhi_qaic_ctrl.c569
-rw-r--r--drivers/accel/qaic/mhi_qaic_ctrl.h12
-rw-r--r--drivers/accel/qaic/qaic_drv.c10
-rw-r--r--drivers/gpu/drm/panel/panel-novatek-nt35950.c10
-rw-r--r--drivers/gpu/drm/panel/panel-orisetech-otm8009a.c2
-rw-r--r--drivers/gpu/drm/ttm/ttm_pool.c30
7 files changed, 21 insertions, 613 deletions
diff --git a/drivers/accel/qaic/Makefile b/drivers/accel/qaic/Makefile
index d5f4952ae79a..2418418f7a50 100644
--- a/drivers/accel/qaic/Makefile
+++ b/drivers/accel/qaic/Makefile
@@ -7,7 +7,6 @@ obj-$(CONFIG_DRM_ACCEL_QAIC) := qaic.o
qaic-y := \
mhi_controller.o \
- mhi_qaic_ctrl.o \
qaic_control.o \
qaic_data.o \
qaic_drv.o
diff --git a/drivers/accel/qaic/mhi_qaic_ctrl.c b/drivers/accel/qaic/mhi_qaic_ctrl.c
deleted file mode 100644
index 0c7e571f1f12..000000000000
--- a/drivers/accel/qaic/mhi_qaic_ctrl.c
+++ /dev/null
@@ -1,569 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0-only
-/* Copyright (c) 2022-2023 Qualcomm Innovation Center, Inc. All rights reserved. */
-
-#include <linux/kernel.h>
-#include <linux/mhi.h>
-#include <linux/mod_devicetable.h>
-#include <linux/module.h>
-#include <linux/poll.h>
-#include <linux/xarray.h>
-#include <uapi/linux/eventpoll.h>
-
-#include "mhi_qaic_ctrl.h"
-#include "qaic.h"
-
-#define MHI_QAIC_CTRL_DRIVER_NAME "mhi_qaic_ctrl"
-#define MHI_QAIC_CTRL_MAX_MINORS 128
-#define MHI_MAX_MTU 0xffff
-static DEFINE_XARRAY_ALLOC(mqc_xa);
-static struct class *mqc_dev_class;
-static int mqc_dev_major;
-
-/**
- * struct mqc_buf - Buffer structure used to receive data from device
- * @data: Address of data to read from
- * @odata: Original address returned from *alloc() API. Used to free this buf.
- * @len: Length of data in byte
- * @node: This buffer will be part of list managed in struct mqc_dev
- */
-struct mqc_buf {
- void *data;
- void *odata;
- size_t len;
- struct list_head node;
-};
-
-/**
- * struct mqc_dev - MHI QAIC Control Device
- * @minor: MQC device node minor number
- * @mhi_dev: Associated mhi device object
- * @mtu: Max TRE buffer length
- * @enabled: Flag to track the state of the MQC device
- * @lock: Mutex lock to serialize access to open_count
- * @read_lock: Mutex lock to serialize readers
- * @write_lock: Mutex lock to serialize writers
- * @ul_wq: Wait queue for writers
- * @dl_wq: Wait queue for readers
- * @dl_queue_lock: Spin lock to serialize access to download queue
- * @dl_queue: Queue of downloaded buffers
- * @open_count: Track open counts
- * @ref_count: Reference count for this structure
- */
-struct mqc_dev {
- u32 minor;
- struct mhi_device *mhi_dev;
- size_t mtu;
- bool enabled;
- struct mutex lock;
- struct mutex read_lock;
- struct mutex write_lock;
- wait_queue_head_t ul_wq;
- wait_queue_head_t dl_wq;
- spinlock_t dl_queue_lock;
- struct list_head dl_queue;
- unsigned int open_count;
- struct kref ref_count;
-};
-
-static void mqc_dev_release(struct kref *ref)
-{
- struct mqc_dev *mqcdev = container_of(ref, struct mqc_dev, ref_count);
-
- mutex_destroy(&mqcdev->read_lock);
- mutex_destroy(&mqcdev->write_lock);
- mutex_destroy(&mqcdev->lock);
- kfree(mqcdev);
-}
-
-static int mhi_qaic_ctrl_fill_dl_queue(struct mqc_dev *mqcdev)
-{
- struct mhi_device *mhi_dev = mqcdev->mhi_dev;
- struct mqc_buf *ctrlbuf;
- int rx_budget;
- int ret = 0;
- void *data;
-
- rx_budget = mhi_get_free_desc_count(mhi_dev, DMA_FROM_DEVICE);
- if (rx_budget < 0)
- return -EIO;
-
- while (rx_budget--) {
- data = kzalloc(mqcdev->mtu + sizeof(*ctrlbuf), GFP_KERNEL);
- if (!data)
- return -ENOMEM;
-
- ctrlbuf = data + mqcdev->mtu;
- ctrlbuf->odata = data;
-
- ret = mhi_queue_buf(mhi_dev, DMA_FROM_DEVICE, data, mqcdev->mtu, MHI_EOT);
- if (ret) {
- kfree(data);
- dev_err(&mhi_dev->dev, "Failed to queue buffer\n");
- return ret;
- }
- }
-
- return ret;
-}
-
-static int mhi_qaic_ctrl_dev_start_chan(struct mqc_dev *mqcdev)
-{
- struct device *dev = &mqcdev->mhi_dev->dev;
- int ret = 0;
-
- ret = mutex_lock_interruptible(&mqcdev->lock);
- if (ret)
- return ret;
- if (!mqcdev->enabled) {
- ret = -ENODEV;
- goto release_dev_lock;
- }
- if (!mqcdev->open_count) {
- ret = mhi_prepare_for_transfer(mqcdev->mhi_dev);
- if (ret) {
- dev_err(dev, "Error starting transfer channels\n");
- goto release_dev_lock;
- }
-
- ret = mhi_qaic_ctrl_fill_dl_queue(mqcdev);
- if (ret) {
- dev_err(dev, "Error filling download queue.\n");
- goto mhi_unprepare;
- }
- }
- mqcdev->open_count++;
- mutex_unlock(&mqcdev->lock);
-
- return 0;
-
-mhi_unprepare:
- mhi_unprepare_from_transfer(mqcdev->mhi_dev);
-release_dev_lock:
- mutex_unlock(&mqcdev->lock);
- return ret;
-}
-
-static struct mqc_dev *mqc_dev_get_by_minor(unsigned int minor)
-{
- struct mqc_dev *mqcdev;
-
- xa_lock(&mqc_xa);
- mqcdev = xa_load(&mqc_xa, minor);
- if (mqcdev)
- kref_get(&mqcdev->ref_count);
- xa_unlock(&mqc_xa);
-
- return mqcdev;
-}
-
-static int mhi_qaic_ctrl_open(struct inode *inode, struct file *filp)
-{
- struct mqc_dev *mqcdev;
- int ret;
-
- mqcdev = mqc_dev_get_by_minor(iminor(inode));
- if (!mqcdev) {
- pr_debug("mqc: minor %d not found\n", iminor(inode));
- return -EINVAL;
- }
-
- ret = mhi_qaic_ctrl_dev_start_chan(mqcdev);
- if (ret) {
- kref_put(&mqcdev->ref_count, mqc_dev_release);
- return ret;
- }
-
- filp->private_data = mqcdev;
-
- return 0;
-}
-
-static void mhi_qaic_ctrl_buf_free(struct mqc_buf *ctrlbuf)
-{
- list_del(&ctrlbuf->node);
- kfree(ctrlbuf->odata);
-}
-
-static void __mhi_qaic_ctrl_release(struct mqc_dev *mqcdev)
-{
- struct mqc_buf *ctrlbuf, *tmp;
-
- mhi_unprepare_from_transfer(mqcdev->mhi_dev);
- wake_up_interruptible(&mqcdev->ul_wq);
- wake_up_interruptible(&mqcdev->dl_wq);
- /*
- * Free the dl_queue. As we have already unprepared mhi transfers, we
- * do not expect any callback functions that update dl_queue hence no need
- * to grab dl_queue lock.
- */
- mutex_lock(&mqcdev->read_lock);
- list_for_each_entry_safe(ctrlbuf, tmp, &mqcdev->dl_queue, node)
- mhi_qaic_ctrl_buf_free(ctrlbuf);
- mutex_unlock(&mqcdev->read_lock);
-}
-
-static int mhi_qaic_ctrl_release(struct inode *inode, struct file *file)
-{
- struct mqc_dev *mqcdev = file->private_data;
-
- mutex_lock(&mqcdev->lock);
- mqcdev->open_count--;
- if (!mqcdev->open_count && mqcdev->enabled)
- __mhi_qaic_ctrl_release(mqcdev);
- mutex_unlock(&mqcdev->lock);
-
- kref_put(&mqcdev->ref_count, mqc_dev_release);
-
- return 0;
-}
-
-static __poll_t mhi_qaic_ctrl_poll(struct file *file, poll_table *wait)
-{
- struct mqc_dev *mqcdev = file->private_data;
- struct mhi_device *mhi_dev;
- __poll_t mask = 0;
-
- mhi_dev = mqcdev->mhi_dev;
-
- poll_wait(file, &mqcdev->ul_wq, wait);
- poll_wait(file, &mqcdev->dl_wq, wait);
-
- mutex_lock(&mqcdev->lock);
- if (!mqcdev->enabled) {
- mutex_unlock(&mqcdev->lock);
- return EPOLLERR;
- }
-
- spin_lock_bh(&mqcdev->dl_queue_lock);
- if (!list_empty(&mqcdev->dl_queue))
- mask |= EPOLLIN | EPOLLRDNORM;
- spin_unlock_bh(&mqcdev->dl_queue_lock);
-
- if (mutex_lock_interruptible(&mqcdev->write_lock)) {
- mutex_unlock(&mqcdev->lock);
- return EPOLLERR;
- }
- if (mhi_get_free_desc_count(mhi_dev, DMA_TO_DEVICE) > 0)
- mask |= EPOLLOUT | EPOLLWRNORM;
- mutex_unlock(&mqcdev->write_lock);
- mutex_unlock(&mqcdev->lock);
-
- dev_dbg(&mhi_dev->dev, "Client attempted to poll, returning mask 0x%x\n", mask);
-
- return mask;
-}
-
-static int mhi_qaic_ctrl_tx(struct mqc_dev *mqcdev)
-{
- int ret;
-
- ret = wait_event_interruptible(mqcdev->ul_wq, !mqcdev->enabled ||
- mhi_get_free_desc_count(mqcdev->mhi_dev, DMA_TO_DEVICE) > 0);
-
- if (!mqcdev->enabled)
- return -ENODEV;
-
- return ret;
-}
-
-static ssize_t mhi_qaic_ctrl_write(struct file *file, const char __user *buf, size_t count,
- loff_t *offp)
-{
- struct mqc_dev *mqcdev = file->private_data;
- struct mhi_device *mhi_dev;
- size_t bytes_xfered = 0;
- struct device *dev;
- int ret, nr_desc;
-
- mhi_dev = mqcdev->mhi_dev;
- dev = &mhi_dev->dev;
-
- if (!mhi_dev->ul_chan)
- return -EOPNOTSUPP;
-
- if (!buf || !count)
- return -EINVAL;
-
- dev_dbg(dev, "Request to transfer %zu bytes\n", count);
-
- ret = mhi_qaic_ctrl_tx(mqcdev);
- if (ret)
- return ret;
-
- if (mutex_lock_interruptible(&mqcdev->write_lock))
- return -EINTR;
-
- nr_desc = mhi_get_free_desc_count(mhi_dev, DMA_TO_DEVICE);
- if (nr_desc * mqcdev->mtu < count) {
- ret = -EMSGSIZE;
- dev_dbg(dev, "Buffer too big to transfer\n");
- goto unlock_mutex;
- }
-
- while (count != bytes_xfered) {
- enum mhi_flags flags;
- size_t to_copy;
- void *kbuf;
-
- to_copy = min_t(size_t, count - bytes_xfered, mqcdev->mtu);
- kbuf = kmalloc(to_copy, GFP_KERNEL);
- if (!kbuf) {
- ret = -ENOMEM;
- goto unlock_mutex;
- }
-
- ret = copy_from_user(kbuf, buf + bytes_xfered, to_copy);
- if (ret) {
- kfree(kbuf);
- ret = -EFAULT;
- goto unlock_mutex;
- }
-
- if (bytes_xfered + to_copy == count)
- flags = MHI_EOT;
- else
- flags = MHI_CHAIN;
-
- ret = mhi_queue_buf(mhi_dev, DMA_TO_DEVICE, kbuf, to_copy, flags);
- if (ret) {
- kfree(kbuf);
- dev_err(dev, "Failed to queue buf of size %zu\n", to_copy);
- goto unlock_mutex;
- }
-
- bytes_xfered += to_copy;
- }
-
- mutex_unlock(&mqcdev->write_lock);
- dev_dbg(dev, "bytes xferred: %zu\n", bytes_xfered);
-
- return bytes_xfered;
-
-unlock_mutex:
- mutex_unlock(&mqcdev->write_lock);
- return ret;
-}
-
-static int mhi_qaic_ctrl_rx(struct mqc_dev *mqcdev)
-{
- int ret;
-
- ret = wait_event_interruptible(mqcdev->dl_wq,
- !mqcdev->enabled || !list_empty(&mqcdev->dl_queue));
-
- if (!mqcdev->enabled)
- return -ENODEV;
-
- return ret;
-}
-
-static ssize_t mhi_qaic_ctrl_read(struct file *file, char __user *buf, size_t count, loff_t *ppos)
-{
- struct mqc_dev *mqcdev = file->private_data;
- struct mqc_buf *ctrlbuf;
- size_t to_copy;
- int ret;
-
- if (!mqcdev->mhi_dev->dl_chan)
- return -EOPNOTSUPP;
-
- ret = mhi_qaic_ctrl_rx(mqcdev);
- if (ret)
- return ret;
-
- if (mutex_lock_interruptible(&mqcdev->read_lock))
- return -EINTR;
-
- ctrlbuf = list_first_entry_or_null(&mqcdev->dl_queue, struct mqc_buf, node);
- if (!ctrlbuf) {
- mutex_unlock(&mqcdev->read_lock);
- ret = -ENODEV;
- goto error_out;
- }
-
- to_copy = min_t(size_t, count, ctrlbuf->len);
- if (copy_to_user(buf, ctrlbuf->data, to_copy)) {
- mutex_unlock(&mqcdev->read_lock);
- dev_dbg(&mqcdev->mhi_dev->dev, "Failed to copy data to user buffer\n");
- ret = -EFAULT;
- goto error_out;
- }
-
- ctrlbuf->len -= to_copy;
- ctrlbuf->data += to_copy;
-
- if (!ctrlbuf->len) {
- spin_lock_bh(&mqcdev->dl_queue_lock);
- mhi_qaic_ctrl_buf_free(ctrlbuf);
- spin_unlock_bh(&mqcdev->dl_queue_lock);
- mhi_qaic_ctrl_fill_dl_queue(mqcdev);
- dev_dbg(&mqcdev->mhi_dev->dev, "Read buf freed\n");
- }
-
- mutex_unlock(&mqcdev->read_lock);
- return to_copy;
-
-error_out:
- mutex_unlock(&mqcdev->read_lock);
- return ret;
-}
-
-static const struct file_operations mhidev_fops = {
- .owner = THIS_MODULE,
- .open = mhi_qaic_ctrl_open,
- .release = mhi_qaic_ctrl_release,
- .read = mhi_qaic_ctrl_read,
- .write = mhi_qaic_ctrl_write,
- .poll = mhi_qaic_ctrl_poll,
-};
-
-static void mhi_qaic_ctrl_ul_xfer_cb(struct mhi_device *mhi_dev, struct mhi_result *mhi_result)
-{
- struct mqc_dev *mqcdev = dev_get_drvdata(&mhi_dev->dev);
-
- dev_dbg(&mhi_dev->dev, "%s: status: %d xfer_len: %zu\n", __func__,
- mhi_result->transaction_status, mhi_result->bytes_xferd);
-
- kfree(mhi_result->buf_addr);
-
- if (!mhi_result->transaction_status)
- wake_up_interruptible(&mqcdev->ul_wq);
-}
-
-static void mhi_qaic_ctrl_dl_xfer_cb(struct mhi_device *mhi_dev, struct mhi_result *mhi_result)
-{
- struct mqc_dev *mqcdev = dev_get_drvdata(&mhi_dev->dev);
- struct mqc_buf *ctrlbuf;
-
- dev_dbg(&mhi_dev->dev, "%s: status: %d receive_len: %zu\n", __func__,
- mhi_result->transaction_status, mhi_result->bytes_xferd);
-
- if (mhi_result->transaction_status &&
- mhi_result->transaction_status != -EOVERFLOW) {
- kfree(mhi_result->buf_addr);
- return;
- }
-
- ctrlbuf = mhi_result->buf_addr + mqcdev->mtu;
- ctrlbuf->data = mhi_result->buf_addr;
- ctrlbuf->len = mhi_result->bytes_xferd;
- spin_lock_bh(&mqcdev->dl_queue_lock);
- list_add_tail(&ctrlbuf->node, &mqcdev->dl_queue);
- spin_unlock_bh(&mqcdev->dl_queue_lock);
-
- wake_up_interruptible(&mqcdev->dl_wq);
-}
-
-static int mhi_qaic_ctrl_probe(struct mhi_device *mhi_dev, const struct mhi_device_id *id)
-{
- struct mqc_dev *mqcdev;
- struct device *dev;
- int ret;
-
- mqcdev = kzalloc(sizeof(*mqcdev), GFP_KERNEL);
- if (!mqcdev)
- return -ENOMEM;
-
- kref_init(&mqcdev->ref_count);
- mutex_init(&mqcdev->lock);
- mqcdev->mhi_dev = mhi_dev;
-
- ret = xa_alloc(&mqc_xa, &mqcdev->minor, mqcdev, XA_LIMIT(0, MHI_QAIC_CTRL_MAX_MINORS),
- GFP_KERNEL);
- if (ret) {
- kfree(mqcdev);
- return ret;
- }
-
- init_waitqueue_head(&mqcdev->ul_wq);
- init_waitqueue_head(&mqcdev->dl_wq);
- mutex_init(&mqcdev->read_lock);
- mutex_init(&mqcdev->write_lock);
- spin_lock_init(&mqcdev->dl_queue_lock);
- INIT_LIST_HEAD(&mqcdev->dl_queue);
- mqcdev->mtu = min_t(size_t, id->driver_data, MHI_MAX_MTU);
- mqcdev->enabled = true;
- mqcdev->open_count = 0;
- dev_set_drvdata(&mhi_dev->dev, mqcdev);
-
- dev = device_create(mqc_dev_class, &mhi_dev->dev, MKDEV(mqc_dev_major, mqcdev->minor),
- mqcdev, "%s", dev_name(&mhi_dev->dev));
- if (IS_ERR(dev)) {
- xa_erase(&mqc_xa, mqcdev->minor);
- dev_set_drvdata(&mhi_dev->dev, NULL);
- kfree(mqcdev);
- return PTR_ERR(dev);
- }
-
- return 0;
-};
-
-static void mhi_qaic_ctrl_remove(struct mhi_device *mhi_dev)
-{
- struct mqc_dev *mqcdev = dev_get_drvdata(&mhi_dev->dev);
-
- device_destroy(mqc_dev_class, MKDEV(mqc_dev_major, mqcdev->minor));
-
- mutex_lock(&mqcdev->lock);
- mqcdev->enabled = false;
- if (mqcdev->open_count)
- __mhi_qaic_ctrl_release(mqcdev);
- mutex_unlock(&mqcdev->lock);
-
- xa_erase(&mqc_xa, mqcdev->minor);
- kref_put(&mqcdev->ref_count, mqc_dev_release);
-}
-
-/* .driver_data stores max mtu */
-static const struct mhi_device_id mhi_qaic_ctrl_match_table[] = {
- { .chan = "QAIC_SAHARA", .driver_data = SZ_32K},
- {},
-};
-MODULE_DEVICE_TABLE(mhi, mhi_qaic_ctrl_match_table);
-
-static struct mhi_driver mhi_qaic_ctrl_driver = {
- .id_table = mhi_qaic_ctrl_match_table,
- .remove = mhi_qaic_ctrl_remove,
- .probe = mhi_qaic_ctrl_probe,
- .ul_xfer_cb = mhi_qaic_ctrl_ul_xfer_cb,
- .dl_xfer_cb = mhi_qaic_ctrl_dl_xfer_cb,
- .driver = {
- .name = MHI_QAIC_CTRL_DRIVER_NAME,
- },
-};
-
-int mhi_qaic_ctrl_init(void)
-{
- int ret;
-
- ret = register_chrdev(0, MHI_QAIC_CTRL_DRIVER_NAME, &mhidev_fops);
- if (ret < 0)
- return ret;
-
- mqc_dev_major = ret;
- mqc_dev_class = class_create(THIS_MODULE, MHI_QAIC_CTRL_DRIVER_NAME);
- if (IS_ERR(mqc_dev_class)) {
- ret = PTR_ERR(mqc_dev_class);
- goto unregister_chrdev;
- }
-
- ret = mhi_driver_register(&mhi_qaic_ctrl_driver);
- if (ret)
- goto destroy_class;
-
- return 0;
-
-destroy_class:
- class_destroy(mqc_dev_class);
-unregister_chrdev:
- unregister_chrdev(mqc_dev_major, MHI_QAIC_CTRL_DRIVER_NAME);
- return ret;
-}
-
-void mhi_qaic_ctrl_deinit(void)
-{
- mhi_driver_unregister(&mhi_qaic_ctrl_driver);
- class_destroy(mqc_dev_class);
- unregister_chrdev(mqc_dev_major, MHI_QAIC_CTRL_DRIVER_NAME);
- xa_destroy(&mqc_xa);
-}
diff --git a/drivers/accel/qaic/mhi_qaic_ctrl.h b/drivers/accel/qaic/mhi_qaic_ctrl.h
deleted file mode 100644
index 930b3ace1a59..000000000000
--- a/drivers/accel/qaic/mhi_qaic_ctrl.h
+++ /dev/null
@@ -1,12 +0,0 @@
-/* SPDX-License-Identifier: GPL-2.0-only
- *
- * Copyright (c) 2022 Qualcomm Innovation Center, Inc. All rights reserved.
- */
-
-#ifndef __MHI_QAIC_CTRL_H__
-#define __MHI_QAIC_CTRL_H__
-
-int mhi_qaic_ctrl_init(void);
-void mhi_qaic_ctrl_deinit(void);
-
-#endif /* __MHI_QAIC_CTRL_H__ */
diff --git a/drivers/accel/qaic/qaic_drv.c b/drivers/accel/qaic/qaic_drv.c
index 1106ad88a5b6..ff80eb571729 100644
--- a/drivers/accel/qaic/qaic_drv.c
+++ b/drivers/accel/qaic/qaic_drv.c
@@ -25,7 +25,6 @@
#include <uapi/drm/qaic_accel.h>
#include "mhi_controller.h"
-#include "mhi_qaic_ctrl.h"
#include "qaic.h"
MODULE_IMPORT_NS(DMA_BUF);
@@ -601,16 +600,8 @@ static int __init qaic_init(void)
goto free_mhi;
}
- ret = mhi_qaic_ctrl_init();
- if (ret) {
- pr_debug("qaic: mhi_qaic_ctrl_init failed %d\n", ret);
- goto free_pci;
- }
-
return 0;
-free_pci:
- pci_unregister_driver(&qaic_pci_driver);
free_mhi:
mhi_driver_unregister(&qaic_mhi_driver);
return ret;
@@ -634,7 +625,6 @@ static void __exit qaic_exit(void)
* reinitializing the link_up state after the cleanup is done.
*/
link_up = true;
- mhi_qaic_ctrl_deinit();
pci_unregister_driver(&qaic_pci_driver);
mhi_driver_unregister(&qaic_mhi_driver);
}
diff --git a/drivers/gpu/drm/panel/panel-novatek-nt35950.c b/drivers/gpu/drm/panel/panel-novatek-nt35950.c
index abf752b36a52..8b108ac80b55 100644
--- a/drivers/gpu/drm/panel/panel-novatek-nt35950.c
+++ b/drivers/gpu/drm/panel/panel-novatek-nt35950.c
@@ -585,8 +585,12 @@ static int nt35950_probe(struct mipi_dsi_device *dsi)
DRM_MODE_CONNECTOR_DSI);
ret = drm_panel_of_backlight(&nt->panel);
- if (ret)
+ if (ret) {
+ if (num_dsis == 2)
+ mipi_dsi_device_unregister(nt->dsi[1]);
+
return dev_err_probe(dev, ret, "Failed to get backlight\n");
+ }
drm_panel_add(&nt->panel);
@@ -602,6 +606,10 @@ static int nt35950_probe(struct mipi_dsi_device *dsi)
ret = mipi_dsi_attach(nt->dsi[i]);
if (ret < 0) {
+ /* If we fail to attach to either host, we're done */
+ if (num_dsis == 2)
+ mipi_dsi_device_unregister(nt->dsi[1]);
+
return dev_err_probe(dev, ret,
"Cannot attach to DSI%d host.\n", i);
}
diff --git a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
index b4729a94c34a..898b892f1143 100644
--- a/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
+++ b/drivers/gpu/drm/panel/panel-orisetech-otm8009a.c
@@ -471,7 +471,7 @@ static int otm8009a_probe(struct mipi_dsi_device *dsi)
DRM_MODE_CONNECTOR_DSI);
ctx->bl_dev = devm_backlight_device_register(dev, dev_name(dev),
- dsi->host->dev, ctx,
+ dev, ctx,
&otm8009a_backlight_ops,
NULL);
if (IS_ERR(ctx->bl_dev)) {
diff --git a/drivers/gpu/drm/ttm/ttm_pool.c b/drivers/gpu/drm/ttm/ttm_pool.c
index 18c342a919a2..dfce896c4bae 100644
--- a/drivers/gpu/drm/ttm/ttm_pool.c
+++ b/drivers/gpu/drm/ttm/ttm_pool.c
@@ -47,11 +47,6 @@
#include "ttm_module.h"
-#define TTM_MAX_ORDER (PMD_SHIFT - PAGE_SHIFT)
-#define __TTM_DIM_ORDER (TTM_MAX_ORDER + 1)
-/* Some architectures have a weird PMD_SHIFT */
-#define TTM_DIM_ORDER (__TTM_DIM_ORDER <= MAX_ORDER ? __TTM_DIM_ORDER : MAX_ORDER)
-
/**
* struct ttm_pool_dma - Helper object for coherent DMA mappings
*
@@ -70,11 +65,11 @@ module_param(page_pool_size, ulong, 0644);
static atomic_long_t allocated_pages;
-static struct ttm_pool_type global_write_combined[TTM_DIM_ORDER];
-static struct ttm_pool_type global_uncached[TTM_DIM_ORDER];
+static struct ttm_pool_type global_write_combined[MAX_ORDER];
+static struct ttm_pool_type global_uncached[MAX_ORDER];
-static struct ttm_pool_type global_dma32_write_combined[TTM_DIM_ORDER];
-static struct ttm_pool_type global_dma32_uncached[TTM_DIM_ORDER];
+static struct ttm_pool_type global_dma32_write_combined[MAX_ORDER];
+static struct ttm_pool_type global_dma32_uncached[MAX_ORDER];
static spinlock_t shrinker_lock;
static struct list_head shrinker_list;
@@ -449,7 +444,7 @@ int ttm_pool_alloc(struct ttm_pool *pool, struct ttm_tt *tt,
else
gfp_flags |= GFP_HIGHUSER;
- for (order = min_t(unsigned int, TTM_MAX_ORDER, __fls(num_pages));
+ for (order = min_t(unsigned int, MAX_ORDER - 1, __fls(num_pages));
num_pages;
order = min_t(unsigned int, order, __fls(num_pages))) {
struct ttm_pool_type *pt;
@@ -568,7 +563,7 @@ void ttm_pool_init(struct ttm_pool *pool, struct device *dev,
if (use_dma_alloc) {
for (i = 0; i < TTM_NUM_CACHING_TYPES; ++i)
- for (j = 0; j < TTM_DIM_ORDER; ++j)
+ for (j = 0; j < MAX_ORDER; ++j)
ttm_pool_type_init(&pool->caching[i].orders[j],
pool, i, j);
}
@@ -588,7 +583,7 @@ void ttm_pool_fini(struct ttm_pool *pool)
if (pool->use_dma_alloc) {
for (i = 0; i < TTM_NUM_CACHING_TYPES; ++i)
- for (j = 0; j < TTM_DIM_ORDER; ++j)
+ for (j = 0; j < MAX_ORDER; ++j)
ttm_pool_type_fini(&pool->caching[i].orders[j]);
}
@@ -642,7 +637,7 @@ static void ttm_pool_debugfs_header(struct seq_file *m)
unsigned int i;
seq_puts(m, "\t ");
- for (i = 0; i < TTM_DIM_ORDER; ++i)
+ for (i = 0; i < MAX_ORDER; ++i)
seq_printf(m, " ---%2u---", i);
seq_puts(m, "\n");
}
@@ -653,7 +648,7 @@ static void ttm_pool_debugfs_orders(struct ttm_pool_type *pt,
{
unsigned int i;
- for (i = 0; i < TTM_DIM_ORDER; ++i)
+ for (i = 0; i < MAX_ORDER; ++i)
seq_printf(m, " %8u", ttm_pool_type_count(&pt[i]));
seq_puts(m, "\n");
}
@@ -756,16 +751,13 @@ int ttm_pool_mgr_init(unsigned long num_pages)
{
unsigned int i;
- BUILD_BUG_ON(TTM_DIM_ORDER > MAX_ORDER);
- BUILD_BUG_ON(TTM_DIM_ORDER < 1);
-
if (!page_pool_size)
page_pool_size = num_pages;
spin_lock_init(&shrinker_lock);
INIT_LIST_HEAD(&shrinker_list);
- for (i = 0; i < TTM_DIM_ORDER; ++i) {
+ for (i = 0; i < MAX_ORDER; ++i) {
ttm_pool_type_init(&global_write_combined[i], NULL,
ttm_write_combined, i);
ttm_pool_type_init(&global_uncached[i], NULL, ttm_uncached, i);
@@ -798,7 +790,7 @@ void ttm_pool_mgr_fini(void)
{
unsigned int i;
- for (i = 0; i < TTM_DIM_ORDER; ++i) {
+ for (i = 0; i < MAX_ORDER; ++i) {
ttm_pool_type_fini(&global_write_combined[i]);
ttm_pool_type_fini(&global_uncached[i]);