mbox series

[v1,0/2] isa: Make the remove callback for isa drivers return void

Message ID 20210121204812.402589-1-uwe@kleine-koenig.org (mailing list archive)
Headers show
Series isa: Make the remove callback for isa drivers return void | expand

Message

Uwe Kleine-König Jan. 21, 2021, 8:48 p.m. UTC
Hello,

as described in the commit log of the 2nd patch returning an error code
from a bus' remove callback doesn't make any difference as the driver
core ignores it and still considers the device removed.

So change the remove callback to return void to not give driver authors
an incentive to believe they could return an error.

There is only a single isa driver in the tree (assuming I didn't miss
any) that has a remove callback that can return a non zero return code.
This is "fixed" in the first patch, to make the second patch more
obviously correct.

Best regards
Uwe

Uwe Kleine-König (2):
  watchdog: pcwd: drop always-false if from remove callback
  isa: Make the remove callback for isa drivers return void

 drivers/base/isa.c                   | 2 +-
 drivers/i2c/busses/i2c-elektor.c     | 4 +---
 drivers/i2c/busses/i2c-pca-isa.c     | 4 +---
 drivers/input/touchscreen/htcpen.c   | 4 +---
 drivers/media/radio/radio-sf16fmr2.c | 4 +---
 drivers/net/can/sja1000/tscan1.c     | 4 +---
 drivers/net/ethernet/3com/3c509.c    | 3 +--
 drivers/scsi/advansys.c              | 3 +--
 drivers/scsi/aha1542.c               | 3 +--
 drivers/scsi/fdomain_isa.c           | 3 +--
 drivers/scsi/g_NCR5380.c             | 3 +--
 drivers/watchdog/pcwd.c              | 7 +------
 include/linux/isa.h                  | 2 +-
 sound/isa/ad1848/ad1848.c            | 3 +--
 sound/isa/adlib.c                    | 3 +--
 sound/isa/cmi8328.c                  | 3 +--
 sound/isa/cmi8330.c                  | 3 +--
 sound/isa/cs423x/cs4231.c            | 3 +--
 sound/isa/cs423x/cs4236.c            | 3 +--
 sound/isa/es1688/es1688.c            | 3 +--
 sound/isa/es18xx.c                   | 3 +--
 sound/isa/galaxy/galaxy.c            | 3 +--
 sound/isa/gus/gusclassic.c           | 3 +--
 sound/isa/gus/gusextreme.c           | 3 +--
 sound/isa/gus/gusmax.c               | 3 +--
 sound/isa/gus/interwave.c            | 3 +--
 sound/isa/msnd/msnd_pinnacle.c       | 3 +--
 sound/isa/opl3sa2.c                  | 3 +--
 sound/isa/opti9xx/miro.c             | 3 +--
 sound/isa/opti9xx/opti92x-ad1848.c   | 3 +--
 sound/isa/sb/jazz16.c                | 3 +--
 sound/isa/sb/sb16.c                  | 3 +--
 sound/isa/sb/sb8.c                   | 3 +--
 sound/isa/sc6000.c                   | 3 +--
 sound/isa/sscape.c                   | 3 +--
 sound/isa/wavefront/wavefront.c      | 3 +--
 36 files changed, 36 insertions(+), 79 deletions(-)


base-commit: 5a158981aafa7f29709034b17bd007b15cb29983

Comments

William Breathitt Gray Jan. 22, 2021, 1:03 a.m. UTC | #1
On Thu, Jan 21, 2021 at 09:48:10PM +0100, Uwe Kleine-König wrote:
> Hello,
> 
> as described in the commit log of the 2nd patch returning an error code
> from a bus' remove callback doesn't make any difference as the driver
> core ignores it and still considers the device removed.
> 
> So change the remove callback to return void to not give driver authors
> an incentive to believe they could return an error.
> 
> There is only a single isa driver in the tree (assuming I didn't miss
> any) that has a remove callback that can return a non zero return code.
> This is "fixed" in the first patch, to make the second patch more
> obviously correct.
> 
> Best regards
> Uwe
> 
> Uwe Kleine-König (2):
>   watchdog: pcwd: drop always-false if from remove callback
>   isa: Make the remove callback for isa drivers return void
> 
>  drivers/base/isa.c                   | 2 +-
>  drivers/i2c/busses/i2c-elektor.c     | 4 +---
>  drivers/i2c/busses/i2c-pca-isa.c     | 4 +---
>  drivers/input/touchscreen/htcpen.c   | 4 +---
>  drivers/media/radio/radio-sf16fmr2.c | 4 +---
>  drivers/net/can/sja1000/tscan1.c     | 4 +---
>  drivers/net/ethernet/3com/3c509.c    | 3 +--
>  drivers/scsi/advansys.c              | 3 +--
>  drivers/scsi/aha1542.c               | 3 +--
>  drivers/scsi/fdomain_isa.c           | 3 +--
>  drivers/scsi/g_NCR5380.c             | 3 +--
>  drivers/watchdog/pcwd.c              | 7 +------
>  include/linux/isa.h                  | 2 +-
>  sound/isa/ad1848/ad1848.c            | 3 +--
>  sound/isa/adlib.c                    | 3 +--
>  sound/isa/cmi8328.c                  | 3 +--
>  sound/isa/cmi8330.c                  | 3 +--
>  sound/isa/cs423x/cs4231.c            | 3 +--
>  sound/isa/cs423x/cs4236.c            | 3 +--
>  sound/isa/es1688/es1688.c            | 3 +--
>  sound/isa/es18xx.c                   | 3 +--
>  sound/isa/galaxy/galaxy.c            | 3 +--
>  sound/isa/gus/gusclassic.c           | 3 +--
>  sound/isa/gus/gusextreme.c           | 3 +--
>  sound/isa/gus/gusmax.c               | 3 +--
>  sound/isa/gus/interwave.c            | 3 +--
>  sound/isa/msnd/msnd_pinnacle.c       | 3 +--
>  sound/isa/opl3sa2.c                  | 3 +--
>  sound/isa/opti9xx/miro.c             | 3 +--
>  sound/isa/opti9xx/opti92x-ad1848.c   | 3 +--
>  sound/isa/sb/jazz16.c                | 3 +--
>  sound/isa/sb/sb16.c                  | 3 +--
>  sound/isa/sb/sb8.c                   | 3 +--
>  sound/isa/sc6000.c                   | 3 +--
>  sound/isa/sscape.c                   | 3 +--
>  sound/isa/wavefront/wavefront.c      | 3 +--
>  36 files changed, 36 insertions(+), 79 deletions(-)
> 
> 
> base-commit: 5a158981aafa7f29709034b17bd007b15cb29983
> -- 
> 2.29.2

Acked-by: William Breathitt Gray <vilhelm.gray@gmail.com>