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authorLinus Torvalds <torvalds@linux-foundation.org>2024-07-24 12:34:47 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2024-07-24 12:34:47 -0700
commit7a46b17d4c00c2547b5bd82eec9489b19128fd65 (patch)
tree60bd35bce279a930859f8eab0e3f5c370e6e28df /drivers/base
parent7a3fad30fd8b4b5e370906b3c554f64026f56c2f (diff)
parentb8ec9dba02a74797421c52b1226b23a4302362a6 (diff)
downloadlwn-7a46b17d4c00c2547b5bd82eec9489b19128fd65.tar.gz
lwn-7a46b17d4c00c2547b5bd82eec9489b19128fd65.zip
Merge tag 'dmaengine-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine
Pull dmaengine updates from Vinod Koul: "New support: - New dmaengine_prep_peripheral_dma_vec() to support transfers using dma vectors and documentation and user in AXI dma - STMicro STM32 DMA3 support and new capabilities of cyclic dma Updates: - Yaml conversion for Freescale imx dma and qdma bindings, sprd sc9860 dma binding - Altera msgdma updates for descriptor management" * tag 'dmaengine-6.11-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/vkoul/dmaengine: (35 commits) dt-bindings: fsl-qdma: fix interrupts 'if' check logic dt-bindings: dma: sprd,sc9860-dma: convert to YAML dmaengine: fsl-dpaa2-qdma: add missing MODULE_DESCRIPTION() macro dmaengine: ti: add missing MODULE_DESCRIPTION() macros dmaengine: ti: cppi41: add missing MODULE_DESCRIPTION() macro dmaengine: virt-dma: add missing MODULE_DESCRIPTION() macro dmaengine: ti: k3-udma: Fix BCHAN count with UHC and HC channels dmaengine: sh: rz-dmac: Fix lockdep assert warning dmaengine: qcom: gpi: clean up the IRQ disable/enable in gpi_reset_chan() dmaengine: fsl-edma: change the memory access from local into remote mode in i.MX 8QM dmaengine: qcom: gpi: remove unused struct 'reg_info' dmaengine: moxart-dma: remove unused struct 'moxart_filter_data' dt-bindings: fsl-qdma: Convert to yaml format dmaengine: fsl-edma: remove redundant "idle" field from fsl_chan dmaengine: fsl-edma: request per-channel IRQ only when channel is allocated dmaengine: stm32-dma3: defer channel registration to specify channel name dmaengine: add channel device name to channel registration dmaengine: stm32-dma3: improve residue granularity dmaengine: stm32-dma3: add device_pause and device_resume ops dmaengine: stm32-dma3: add DMA_MEMCPY capability ...
Diffstat (limited to 'drivers/base')
-rw-r--r--drivers/base/firmware_loader/main.c90
1 files changed, 63 insertions, 27 deletions
diff --git a/drivers/base/firmware_loader/main.c b/drivers/base/firmware_loader/main.c
index da8ca01d011c..a03ee4b11134 100644
--- a/drivers/base/firmware_loader/main.c
+++ b/drivers/base/firmware_loader/main.c
@@ -1172,34 +1172,11 @@ static void request_firmware_work_func(struct work_struct *work)
kfree(fw_work);
}
-/**
- * request_firmware_nowait() - asynchronous version of request_firmware
- * @module: module requesting the firmware
- * @uevent: sends uevent to copy the firmware image if this flag
- * is non-zero else the firmware copy must be done manually.
- * @name: name of firmware file
- * @device: device for which firmware is being loaded
- * @gfp: allocation flags
- * @context: will be passed over to @cont, and
- * @fw may be %NULL if firmware request fails.
- * @cont: function will be called asynchronously when the firmware
- * request is over.
- *
- * Caller must hold the reference count of @device.
- *
- * Asynchronous variant of request_firmware() for user contexts:
- * - sleep for as small periods as possible since it may
- * increase kernel boot time of built-in device drivers
- * requesting firmware in their ->probe() methods, if
- * @gfp is GFP_KERNEL.
- *
- * - can't sleep at all if @gfp is GFP_ATOMIC.
- **/
-int
-request_firmware_nowait(
+
+static int _request_firmware_nowait(
struct module *module, bool uevent,
const char *name, struct device *device, gfp_t gfp, void *context,
- void (*cont)(const struct firmware *fw, void *context))
+ void (*cont)(const struct firmware *fw, void *context), bool nowarn)
{
struct firmware_work *fw_work;
@@ -1217,7 +1194,8 @@ request_firmware_nowait(
fw_work->context = context;
fw_work->cont = cont;
fw_work->opt_flags = FW_OPT_NOWAIT |
- (uevent ? FW_OPT_UEVENT : FW_OPT_USERHELPER);
+ (uevent ? FW_OPT_UEVENT : FW_OPT_USERHELPER) |
+ (nowarn ? FW_OPT_NO_WARN : 0);
if (!uevent && fw_cache_is_setup(device, name)) {
kfree_const(fw_work->name);
@@ -1236,8 +1214,66 @@ request_firmware_nowait(
schedule_work(&fw_work->work);
return 0;
}
+
+/**
+ * request_firmware_nowait() - asynchronous version of request_firmware
+ * @module: module requesting the firmware
+ * @uevent: sends uevent to copy the firmware image if this flag
+ * is non-zero else the firmware copy must be done manually.
+ * @name: name of firmware file
+ * @device: device for which firmware is being loaded
+ * @gfp: allocation flags
+ * @context: will be passed over to @cont, and
+ * @fw may be %NULL if firmware request fails.
+ * @cont: function will be called asynchronously when the firmware
+ * request is over.
+ *
+ * Caller must hold the reference count of @device.
+ *
+ * Asynchronous variant of request_firmware() for user contexts:
+ * - sleep for as small periods as possible since it may
+ * increase kernel boot time of built-in device drivers
+ * requesting firmware in their ->probe() methods, if
+ * @gfp is GFP_KERNEL.
+ *
+ * - can't sleep at all if @gfp is GFP_ATOMIC.
+ **/
+int request_firmware_nowait(
+ struct module *module, bool uevent,
+ const char *name, struct device *device, gfp_t gfp, void *context,
+ void (*cont)(const struct firmware *fw, void *context))
+{
+ return _request_firmware_nowait(module, uevent, name, device, gfp,
+ context, cont, false);
+
+}
EXPORT_SYMBOL(request_firmware_nowait);
+/**
+ * firmware_request_nowait_nowarn() - async version of request_firmware_nowarn
+ * @module: module requesting the firmware
+ * @name: name of firmware file
+ * @device: device for which firmware is being loaded
+ * @gfp: allocation flags
+ * @context: will be passed over to @cont, and
+ * @fw may be %NULL if firmware request fails.
+ * @cont: function will be called asynchronously when the firmware
+ * request is over.
+ *
+ * Similar in function to request_firmware_nowait(), but doesn't print a warning
+ * when the firmware file could not be found and always sends a uevent to copy
+ * the firmware image.
+ */
+int firmware_request_nowait_nowarn(
+ struct module *module, const char *name,
+ struct device *device, gfp_t gfp, void *context,
+ void (*cont)(const struct firmware *fw, void *context))
+{
+ return _request_firmware_nowait(module, FW_ACTION_UEVENT, name, device,
+ gfp, context, cont, true);
+}
+EXPORT_SYMBOL_GPL(firmware_request_nowait_nowarn);
+
#ifdef CONFIG_FW_CACHE
static ASYNC_DOMAIN_EXCLUSIVE(fw_cache_domain);