[PATCH 1/5] firmware_loader: expand firmware error codes with skip error

[Marco Felsch <m.felsch@xxxxxxxxxxxxxx>]

Add FW_UPLOAD_ERR_SKIP to allow drivers to inform the firmware_loader
framework that the update is not required. This can be the case if the
user provided firmware matches the current running firmware.

Sync lib/test_firmware.c file accordingly.

Signed-off-by: Marco Felsch <m.felsch@xxxxxxxxxxxxxx>
---
 drivers/base/firmware_loader/sysfs_upload.c | 1 +
 include/linux/firmware.h                    | 2 ++
 lib/test_firmware.c                         | 1 +
 3 files changed, 4 insertions(+)

diff --git a/drivers/base/firmware_loader/sysfs_upload.c b/drivers/base/firmware_loader/sysfs_upload.c
index 829270067d16..b3cbe5b156e3 100644
--- a/drivers/base/firmware_loader/sysfs_upload.c
+++ b/drivers/base/firmware_loader/sysfs_upload.c
@@ -28,6 +28,7 @@ static const char * const fw_upload_err_str[] = {
 	[FW_UPLOAD_ERR_RW_ERROR]     = "read-write-error",
 	[FW_UPLOAD_ERR_WEAROUT]	     = "flash-wearout",
 	[FW_UPLOAD_ERR_FW_INVALID]   = "firmware-invalid",
+	[FW_UPLOAD_ERR_SKIP]         = "skip",
 };
 
 static const char *fw_upload_progress(struct device *dev,
diff --git a/include/linux/firmware.h b/include/linux/firmware.h
index aae1b85ffc10..46d2192b733a 100644
--- a/include/linux/firmware.h
+++ b/include/linux/firmware.h
@@ -29,6 +29,7 @@ struct firmware {
  * @FW_UPLOAD_ERR_RW_ERROR: read or write to HW failed, see kernel log
  * @FW_UPLOAD_ERR_WEAROUT: FLASH device is approaching wear-out, wait & retry
  * @FW_UPLOAD_ERR_FW_INVALID: invalid firmware file
+ * @FW_UPLOAD_ERR_SKIP: firmware is already up to date, skip update
  * @FW_UPLOAD_ERR_MAX: Maximum error code marker
  */
 enum fw_upload_err {
@@ -41,6 +42,7 @@ enum fw_upload_err {
 	FW_UPLOAD_ERR_RW_ERROR,
 	FW_UPLOAD_ERR_WEAROUT,
 	FW_UPLOAD_ERR_FW_INVALID,
+	FW_UPLOAD_ERR_SKIP,
 	FW_UPLOAD_ERR_MAX
 };
 
diff --git a/lib/test_firmware.c b/lib/test_firmware.c
index bcb32cbff188..6715eac10c6b 100644
--- a/lib/test_firmware.c
+++ b/lib/test_firmware.c
@@ -1133,6 +1133,7 @@ static const char * const fw_upload_err_str[] = {
 	[FW_UPLOAD_ERR_RW_ERROR]     = "read-write-error",
 	[FW_UPLOAD_ERR_WEAROUT]	     = "flash-wearout",
 	[FW_UPLOAD_ERR_FW_INVALID]   = "firmware-invalid",
+	[FW_UPLOAD_ERR_SKIP]         = "skip",
 };
 
 static void upload_err_inject_error(struct test_firmware_upload *tst,

-- 
2.39.5