linux-kernel - Re: [PATCH v2 1/4] firmware_loader: expand firmware error codes with skip error

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Message-ID: <20250627172813.x2bgp6frsjrzgx7l@pengutronix.de>
Date: Fri, 27 Jun 2025 19:28:13 +0200
From: Marco Felsch <m.felsch@...gutronix.de>
To: Russ Weight <russ.weight@...ux.dev>
Cc: Luis Chamberlain <mcgrof@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	"Rafael J. Wysocki" <rafael@...nel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Dmitry Torokhov <dmitry.torokhov@...il.com>,
	Kamel Bouhara <kamel.bouhara@...tlin.com>,
	Marco Felsch <kernel@...gutronix.de>,
	Henrik Rydberg <rydberg@...math.org>,
	Danilo Krummrich <dakr@...hat.com>, linux-kernel@...r.kernel.org,
	devicetree@...r.kernel.org, linux-input@...r.kernel.org
Subject: Re: [PATCH v2 1/4] firmware_loader: expand firmware error codes with
 skip error

On 25-06-04, Russ Weight wrote:
> On Thu, May 29, 2025 at 12:08:42AM +0200, Marco Felsch wrote:
> > 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.
> 
> The changes below look fine, but the commit message is inconsistent
> with the actual changes. The commit message should reference
> FW_UPLOAD_ERR_DUPLICATE instead of FW_UPLOAD_ERR_SKIP.

Argh.. you're right. Will fix this in the v3, thanks.

> 
> - Russ
> 
> > 
> > Sync lib/test_firmware.c file accordingly.
> > 
> > Signed-off-by: Marco Felsch <m.felsch@...gutronix.de>
> > ---
> >  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 829270067d1632f92656859fb9143e3fa9635670..0a583a1b3f4fde563257566426d523fbf839b13f 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_DUPLICATE]    = "firmware-duplicate",
> >  };
> >  
> >  static const char *fw_upload_progress(struct device *dev,
> > diff --git a/include/linux/firmware.h b/include/linux/firmware.h
> > index aae1b85ffc10e20e9c3c9b6009d26b83efd8cb24..fe7797be4c08cd62cdad9617b8f70095d5e0af2f 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_DUPLICATE: firmware is already up to date (duplicate)
> >   * @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_DUPLICATE,
> >  	FW_UPLOAD_ERR_MAX
> >  };
> >  
> > diff --git a/lib/test_firmware.c b/lib/test_firmware.c
> > index 211222e63328f970228920f5662ee80cc7f51215..603c3a4b385c849944a695849a1894693234b5eb 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_DUPLICATE]    = "firmware-duplicate",
> >  };
> >  
> >  static void upload_err_inject_error(struct test_firmware_upload *tst,
> > 
> > -- 
> > 2.39.5
> > 
>