diff options
Diffstat (limited to 'drivers/cxl/pmem.c')
| -rw-r--r-- | drivers/cxl/pmem.c | 28 |
1 files changed, 15 insertions, 13 deletions
diff --git a/drivers/cxl/pmem.c b/drivers/cxl/pmem.c index 4ef93da22335..d2d43a4fc053 100644 --- a/drivers/cxl/pmem.c +++ b/drivers/cxl/pmem.c @@ -1,7 +1,7 @@ // SPDX-License-Identifier: GPL-2.0-only /* Copyright(c) 2021 Intel Corporation. All rights reserved. */ #include <linux/libnvdimm.h> -#include <asm/unaligned.h> +#include <linux/unaligned.h> #include <linux/device.h> #include <linux/module.h> #include <linux/ndctl.h> @@ -102,13 +102,15 @@ static int cxl_pmem_get_config_size(struct cxl_memdev_state *mds, struct nd_cmd_get_config_size *cmd, unsigned int buf_len) { + struct cxl_mailbox *cxl_mbox = &mds->cxlds.cxl_mbox; + if (sizeof(*cmd) > buf_len) return -EINVAL; *cmd = (struct nd_cmd_get_config_size){ .config_size = mds->lsa_size, .max_xfer = - mds->payload_size - sizeof(struct cxl_mbox_set_lsa), + cxl_mbox->payload_size - sizeof(struct cxl_mbox_set_lsa), }; return 0; @@ -118,6 +120,7 @@ static int cxl_pmem_get_config_data(struct cxl_memdev_state *mds, struct nd_cmd_get_config_data_hdr *cmd, unsigned int buf_len) { + struct cxl_mailbox *cxl_mbox = &mds->cxlds.cxl_mbox; struct cxl_mbox_get_lsa get_lsa; struct cxl_mbox_cmd mbox_cmd; int rc; @@ -139,7 +142,7 @@ static int cxl_pmem_get_config_data(struct cxl_memdev_state *mds, .payload_out = cmd->out_buf, }; - rc = cxl_internal_send_cmd(mds, &mbox_cmd); + rc = cxl_internal_send_cmd(cxl_mbox, &mbox_cmd); cmd->status = 0; return rc; @@ -149,6 +152,7 @@ static int cxl_pmem_set_config_data(struct cxl_memdev_state *mds, struct nd_cmd_set_config_hdr *cmd, unsigned int buf_len) { + struct cxl_mailbox *cxl_mbox = &mds->cxlds.cxl_mbox; struct cxl_mbox_set_lsa *set_lsa; struct cxl_mbox_cmd mbox_cmd; int rc; @@ -175,7 +179,7 @@ static int cxl_pmem_set_config_data(struct cxl_memdev_state *mds, .size_in = struct_size(set_lsa, data, cmd->in_length), }; - rc = cxl_internal_send_cmd(mds, &mbox_cmd); + rc = cxl_internal_send_cmd(cxl_mbox, &mbox_cmd); /* * Set "firmware" status (4-packed bytes at the end of the input @@ -233,15 +237,13 @@ static int detach_nvdimm(struct device *dev, void *data) if (!is_cxl_nvdimm(dev)) return 0; - device_lock(dev); - if (!dev->driver) - goto out; - - cxl_nvd = to_cxl_nvdimm(dev); - if (cxl_nvd->cxlmd && cxl_nvd->cxlmd->cxl_nvb == data) - release = true; -out: - device_unlock(dev); + scoped_guard(device, dev) { + if (dev->driver) { + cxl_nvd = to_cxl_nvdimm(dev); + if (cxl_nvd->cxlmd && cxl_nvd->cxlmd->cxl_nvb == data) + release = true; + } + } if (release) device_release_driver(dev); return 0; |