[PATCH net-next 7/9] firmware_loader: Expand Firmware upload error codes

Kory Maincent
2023-11-16T14:02:02Z

No error code are available to signal an invalid firmware content.
Drivers that can check the firmware content validity can not return this
specific failure to the user-space

Expand the firmware error code with an additional code:
- "firmware invalid" code which can be used when the provided firmware
is invalid

Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
---
drivers/base/firmware_loader/sysfs_upload.c | 1 +
include/linux/firmware.h | 2 ++
2 files changed, 3 insertions(+)

diff --git a/drivers/base/firmware_loader/sysfs_upload.c b/drivers/base/firmware_loader/sysfs_upload.c
index a0af8f5f13d8..829270067d16 100644
--- a/drivers/base/firmware_loader/sysfs_upload.c
+++ b/drivers/base/firmware_loader/sysfs_upload.c
@@ -27,6 +27,7 @@ static const char * const fw_upload_err_str[] = {
[FW_UPLOAD_ERR_INVALID_SIZE] = "invalid-file-size",
[FW_UPLOAD_ERR_RW_ERROR] = "read-write-error",
[FW_UPLOAD_ERR_WEAROUT] = "flash-wearout",
+ [FW_UPLOAD_ERR_FW_INVALID] = "firmware-invalid",
};

static const char *fw_upload_progress(struct device *dev,
diff --git a/include/linux/firmware.h b/include/linux/firmware.h
index de7fea3bca51..0311858b46ce 100644
--- a/include/linux/firmware.h
+++ b/include/linux/firmware.h
@@ -27,6 +27,7 @@ struct firmware {
* @FW_UPLOAD_ERR_INVALID_SIZE: invalid firmware image size
* @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_MAX: Maximum error code marker
*/
enum fw_upload_err {
@@ -38,6 +39,7 @@ enum fw_upload_err {
FW_UPLOAD_ERR_INVALID_SIZE,
FW_UPLOAD_ERR_RW_ERROR,
FW_UPLOAD_ERR_WEAROUT,
+ FW_UPLOAD_ERR_FW_INVALID,
FW_UPLOAD_ERR_MAX
};

--
2.25.1