From 65db85fba1df213ff80d6f3cbafee244c58f6ec3 Mon Sep 17 00:00:00 2001 From: Takashi Sakamoto Date: Tue, 2 May 2017 22:33:03 +0900 Subject: ASoC: intel: atom: localize variable without external linkage A driver for Intel SST driver for old atom platform includes a variable which has no external linkage. These functions should have static qualifier. This commit adds the qualifier to localize the variable. This issue is detected by sparse: sst.c:261:1: warning: symbol 'dev_attr_firmware_version' was not declared. Should it be static? Cc: Sebastien Guiriec Cc: Vinod Koul Signed-off-by: Takashi Sakamoto Signed-off-by: Mark Brown --- sound/soc/intel/atom/sst/sst.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) (limited to 'sound/soc/intel/atom/sst/sst.c') diff --git a/sound/soc/intel/atom/sst/sst.c b/sound/soc/intel/atom/sst/sst.c index f9ba71315e33..d97556a3772c 100644 --- a/sound/soc/intel/atom/sst/sst.c +++ b/sound/soc/intel/atom/sst/sst.c @@ -258,7 +258,7 @@ static ssize_t firmware_version_show(struct device *dev, } -DEVICE_ATTR_RO(firmware_version); +static DEVICE_ATTR_RO(firmware_version); static const struct attribute *sst_fw_version_attrs[] = { &dev_attr_firmware_version.attr, -- cgit v1.2.3 From 9a075265c6dc040e2946d21f4f9d082495bd5460 Mon Sep 17 00:00:00 2001 From: Matthias Kaehlcke Date: Mon, 22 May 2017 17:12:58 -0700 Subject: ASoC: Intel: sst: Remove unused function sst_restore_shim64() Looks like the function has never been used since it was added by commit b0d94acd634a ("ASoC: Intel: mrfld - add shim save restore"). Removing it fixes the following warning when building with clang: sound/soc/intel/atom/sst/sst.c:360:20: error: unused function 'sst_restore_shim64' [-Werror,-Wunused-function] Signed-off-by: Matthias Kaehlcke Signed-off-by: Mark Brown --- sound/soc/intel/atom/sst/sst.c | 16 ---------------- 1 file changed, 16 deletions(-) (limited to 'sound/soc/intel/atom/sst/sst.c') diff --git a/sound/soc/intel/atom/sst/sst.c b/sound/soc/intel/atom/sst/sst.c index d97556a3772c..2d43b8693c0c 100644 --- a/sound/soc/intel/atom/sst/sst.c +++ b/sound/soc/intel/atom/sst/sst.c @@ -397,22 +397,6 @@ static inline void sst_save_shim64(struct intel_sst_drv *ctx, spin_unlock_irqrestore(&ctx->ipc_spin_lock, irq_flags); } -static inline void sst_restore_shim64(struct intel_sst_drv *ctx, - void __iomem *shim, - struct sst_shim_regs64 *shim_regs) -{ - unsigned long irq_flags; - - /* - * we only need to restore IMRX for this case, rest will be - * initialize by FW or driver when firmware is loaded - */ - spin_lock_irqsave(&ctx->ipc_spin_lock, irq_flags); - sst_shim_write64(shim, SST_IMRX, shim_regs->imrx); - sst_shim_write64(shim, SST_CSR, shim_regs->csr); - spin_unlock_irqrestore(&ctx->ipc_spin_lock, irq_flags); -} - void sst_configure_runtime_pm(struct intel_sst_drv *ctx) { pm_runtime_set_autosuspend_delay(ctx->dev, SST_SUSPEND_DELAY); -- cgit v1.2.3 From 98cf2c03b467fa67df58cb52adeb85b425cabcb2 Mon Sep 17 00:00:00 2001 From: Douglas Anderson Date: Tue, 30 May 2017 09:51:30 -0700 Subject: ASoC: Intel: sst: Delete sst_shim_regs64; saved regs are never used In commit 9a075265c6dc ("ASoC: Intel: sst: Remove unused function sst_restore_shim64()"), we deleted the sst_restore_shim64() since it was never used. ...but a quick look at the code shows that we should also be able to remove the sst_save_shim64() function and the structure members we were storing data in. Once we delete sst_save_shim64() there are no longer any users of the 'sst_shim_regs64' structure. That means we can delete it completely and also avoid allocating memory for it. This saves a whopping 136 bytes of devm allocated memory. We also get the nice benefit of avoiding an error path in the init code. Note that the saving code that we're removing (and the comments talking about how important it is to do the save) has been around since commit 336cfbb05edf ("ASoC: Intel: mrfld- add ACPI module"). Signed-off-by: Douglas Anderson Reviewed-by: Andy Shevchenko Acked-by: Vinod Koul Signed-off-by: Mark Brown --- sound/soc/intel/atom/sst/sst.c | 19 ------------------- sound/soc/intel/atom/sst/sst.h | 22 ---------------------- sound/soc/intel/atom/sst/sst_acpi.c | 14 -------------- 3 files changed, 55 deletions(-) (limited to 'sound/soc/intel/atom/sst/sst.c') diff --git a/sound/soc/intel/atom/sst/sst.c b/sound/soc/intel/atom/sst/sst.c index 2d43b8693c0c..5ee92257ca85 100644 --- a/sound/soc/intel/atom/sst/sst.c +++ b/sound/soc/intel/atom/sst/sst.c @@ -382,21 +382,6 @@ void sst_context_cleanup(struct intel_sst_drv *ctx) } EXPORT_SYMBOL_GPL(sst_context_cleanup); -static inline void sst_save_shim64(struct intel_sst_drv *ctx, - void __iomem *shim, - struct sst_shim_regs64 *shim_regs) -{ - unsigned long irq_flags; - - spin_lock_irqsave(&ctx->ipc_spin_lock, irq_flags); - - shim_regs->imrx = sst_shim_read64(shim, SST_IMRX); - shim_regs->csr = sst_shim_read64(shim, SST_CSR); - - - spin_unlock_irqrestore(&ctx->ipc_spin_lock, irq_flags); -} - void sst_configure_runtime_pm(struct intel_sst_drv *ctx) { pm_runtime_set_autosuspend_delay(ctx->dev, SST_SUSPEND_DELAY); @@ -416,8 +401,6 @@ void sst_configure_runtime_pm(struct intel_sst_drv *ctx) pm_runtime_set_active(ctx->dev); else pm_runtime_put_noidle(ctx->dev); - - sst_save_shim64(ctx, ctx->shim, ctx->shim_regs64); } EXPORT_SYMBOL_GPL(sst_configure_runtime_pm); @@ -441,8 +424,6 @@ static int intel_sst_runtime_suspend(struct device *dev) flush_workqueue(ctx->post_msg_wq); ctx->ops->reset(ctx); - /* save the shim registers because PMC doesn't save state */ - sst_save_shim64(ctx, ctx->shim, ctx->shim_regs64); return ret; } diff --git a/sound/soc/intel/atom/sst/sst.h b/sound/soc/intel/atom/sst/sst.h index 5c9a51cc77aa..1693befa455a 100644 --- a/sound/soc/intel/atom/sst/sst.h +++ b/sound/soc/intel/atom/sst/sst.h @@ -317,26 +317,6 @@ struct sst_ipc_reg { int ipcd; }; -struct sst_shim_regs64 { - u64 csr; - u64 pisr; - u64 pimr; - u64 isrx; - u64 isrd; - u64 imrx; - u64 imrd; - u64 ipcx; - u64 ipcd; - u64 isrsc; - u64 isrlpesc; - u64 imrsc; - u64 imrlpesc; - u64 ipcsc; - u64 ipclpesc; - u64 clkctl; - u64 csr2; -}; - struct sst_fw_save { void *iram; void *dram; @@ -356,7 +336,6 @@ struct sst_fw_save { * @dram : SST DRAM pointer * @pdata : SST info passed as a part of pci platform data * @shim_phy_add : SST shim phy addr - * @shim_regs64: Struct to save shim registers * @ipc_dispatch_list : ipc messages dispatched * @rx_list : to copy the process_reply/process_msg from DSP * @ipc_post_msg_wq : wq to post IPC messages context @@ -398,7 +377,6 @@ struct intel_sst_drv { unsigned int ddr_end; unsigned int ddr_base; unsigned int mailbox_recv_offset; - struct sst_shim_regs64 *shim_regs64; struct list_head block_list; struct list_head ipc_dispatch_list; struct sst_platform_info *pdata; diff --git a/sound/soc/intel/atom/sst/sst_acpi.c b/sound/soc/intel/atom/sst/sst_acpi.c index 592f6afaf2a5..cf88cd1865fb 100644 --- a/sound/soc/intel/atom/sst/sst_acpi.c +++ b/sound/soc/intel/atom/sst/sst_acpi.c @@ -358,23 +358,9 @@ static int sst_acpi_probe(struct platform_device *pdev) if (ret < 0) return ret; - /* need to save shim registers in BYT */ - ctx->shim_regs64 = devm_kzalloc(ctx->dev, sizeof(*ctx->shim_regs64), - GFP_KERNEL); - if (!ctx->shim_regs64) { - ret = -ENOMEM; - goto do_sst_cleanup; - } - sst_configure_runtime_pm(ctx); platform_set_drvdata(pdev, ctx); return ret; - -do_sst_cleanup: - sst_context_cleanup(ctx); - platform_set_drvdata(pdev, NULL); - dev_err(ctx->dev, "failed with %d\n", ret); - return ret; } /** -- cgit v1.2.3 From 75bd90860a1f6d4671403f5b7beb9c4430ca9750 Mon Sep 17 00:00:00 2001 From: Takashi Iwai Date: Fri, 16 Jun 2017 11:20:29 +0200 Subject: ASoC: intel: Use kvzalloc() for suspend buffers Intel SST driver allocates lots of pages at suspend for saving the firmware states, and this may occasionally lead to the allocation error due to the high order, ending up with the suspend failure. Use kvzalloc() so that it can fall back to vmalloc() gracefully. Signed-off-by: Takashi Iwai Signed-off-by: Mark Brown --- sound/soc/intel/atom/sst/sst.c | 22 +++++++++++----------- sound/soc/intel/atom/sst/sst.h | 8 ++++---- 2 files changed, 15 insertions(+), 15 deletions(-) (limited to 'sound/soc/intel/atom/sst/sst.c') diff --git a/sound/soc/intel/atom/sst/sst.c b/sound/soc/intel/atom/sst/sst.c index 5ee92257ca85..8afdff457579 100644 --- a/sound/soc/intel/atom/sst/sst.c +++ b/sound/soc/intel/atom/sst/sst.c @@ -464,23 +464,23 @@ static int intel_sst_suspend(struct device *dev) fw_save = kzalloc(sizeof(*fw_save), GFP_KERNEL); if (!fw_save) return -ENOMEM; - fw_save->iram = kzalloc(ctx->iram_end - ctx->iram_base, GFP_KERNEL); + fw_save->iram = kvzalloc(ctx->iram_end - ctx->iram_base, GFP_KERNEL); if (!fw_save->iram) { ret = -ENOMEM; goto iram; } - fw_save->dram = kzalloc(ctx->dram_end - ctx->dram_base, GFP_KERNEL); + fw_save->dram = kvzalloc(ctx->dram_end - ctx->dram_base, GFP_KERNEL); if (!fw_save->dram) { ret = -ENOMEM; goto dram; } - fw_save->sram = kzalloc(SST_MAILBOX_SIZE, GFP_KERNEL); + fw_save->sram = kvzalloc(SST_MAILBOX_SIZE, GFP_KERNEL); if (!fw_save->sram) { ret = -ENOMEM; goto sram; } - fw_save->ddr = kzalloc(ctx->ddr_end - ctx->ddr_base, GFP_KERNEL); + fw_save->ddr = kvzalloc(ctx->ddr_end - ctx->ddr_base, GFP_KERNEL); if (!fw_save->ddr) { ret = -ENOMEM; goto ddr; @@ -495,11 +495,11 @@ static int intel_sst_suspend(struct device *dev) ctx->ops->reset(ctx); return 0; ddr: - kfree(fw_save->sram); + kvfree(fw_save->sram); sram: - kfree(fw_save->dram); + kvfree(fw_save->dram); dram: - kfree(fw_save->iram); + kvfree(fw_save->iram); iram: kfree(fw_save); return ret; @@ -527,10 +527,10 @@ static int intel_sst_resume(struct device *dev) memcpy32_toio(ctx->mailbox, fw_save->sram, SST_MAILBOX_SIZE); memcpy32_toio(ctx->ddr, fw_save->ddr, ctx->ddr_end - ctx->ddr_base); - kfree(fw_save->sram); - kfree(fw_save->dram); - kfree(fw_save->iram); - kfree(fw_save->ddr); + kvfree(fw_save->sram); + kvfree(fw_save->dram); + kvfree(fw_save->iram); + kvfree(fw_save->ddr); kfree(fw_save); block = sst_create_block(ctx, 0, FW_DWNL_ID); diff --git a/sound/soc/intel/atom/sst/sst.h b/sound/soc/intel/atom/sst/sst.h index 1693befa455a..e02e2b4cc08f 100644 --- a/sound/soc/intel/atom/sst/sst.h +++ b/sound/soc/intel/atom/sst/sst.h @@ -318,10 +318,10 @@ struct sst_ipc_reg { }; struct sst_fw_save { - void *iram; - void *dram; - void *sram; - void *ddr; + void *iram; /* allocated via kvmalloc() */ + void *dram; /* allocated via kvmalloc() */ + void *sram; /* allocated via kvmalloc() */ + void *ddr; /* allocated via kvmalloc() */ }; /** -- cgit v1.2.3