| Message ID | 20210111152029.28426-4-martin.kepplinger@puri.sm (mailing list archive) |
|---|---|
| State | Superseded |
| Headers | show |
| Series | scsi: add runtime PM workaround for SD cardreaders | expand |
On 11.01.21 16:20, Martin Kepplinger wrote: > Make the sd driver act appropriately when the user has set > expect_media_change_suspend for a device. > > Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm> > --- > drivers/scsi/sd.c | 21 ++++++++++++++++++++- > 1 file changed, 20 insertions(+), 1 deletion(-) > > diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c > index a3d2d4bc4a3d..ad89f8c76a27 100644 > --- a/drivers/scsi/sd.c > +++ b/drivers/scsi/sd.c > @@ -608,7 +608,7 @@ static const struct dev_pm_ops sd_pm_ops = { > .poweroff = sd_suspend_system, > .restore = sd_resume, > .runtime_suspend = sd_suspend_runtime, > - .runtime_resume = sd_resume, > + .runtime_resume = sd_resume_runtime, > }; > > static struct scsi_driver sd_template = { > @@ -3699,6 +3699,25 @@ static int sd_resume(struct device *dev) > return ret; > } > > +static int sd_resume_runtime(struct device *dev) > +{ > + struct scsi_disk *sdkp = dev_get_drvdata(dev); > + int ret; > + > + if (!sdkp) /* E.g.: runtime resume at the start of sd_probe() */ > + return 0; > + > + /* > + * expect_media_change_suspend is the userspace setting and > + * expecting_media_change is what is checked and cleared in the > + * error path if we set it here. > + */ > + if (sdkp->device->expect_media_change_suspend) > + sdkp->device->expecting_media_change = 1; > + > + return sd_resume(dev); > +} > + > /** > * init_sd - entry point for this driver (both when built in or when > * a module). > oops, I'm very sorry, but the following is missing in order for this to build: --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -114,6 +114,7 @@ static void sd_shutdown(struct device *); static int sd_suspend_system(struct device *); static int sd_suspend_runtime(struct device *); static int sd_resume(struct device *); +static int sd_resume_runtime(struct device *); static void sd_rescan(struct device *); static blk_status_t sd_init_command(struct scsi_cmnd *SCpnt); static void sd_uninit_command(struct scsi_cmnd *SCpnt);
Hi Martin,
Thank you for the patch! Yet something to improve:
[auto build test ERROR on mkp-scsi/for-next]
[also build test ERROR on scsi/for-next v5.11-rc3 next-20210111]
[cannot apply to target/for-next]
[If your patch is applied to the wrong git tree, kindly drop us a note.
And when submitting patch, we suggest to use '--base' as documented in
https://git-scm.com/docs/git-format-patch]
url: https://github.com/0day-ci/linux/commits/Martin-Kepplinger/scsi-add-runtime-PM-workaround-for-SD-cardreaders/20210111-232622
base: https://git.kernel.org/pub/scm/linux/kernel/git/mkp/scsi.git for-next
config: riscv-randconfig-r023-20210111 (attached as .config)
compiler: riscv32-linux-gcc (GCC) 9.3.0
reproduce (this is a W=1 build):
wget https://raw.githubusercontent.com/intel/lkp-tests/master/sbin/make.cross -O ~/bin/make.cross
chmod +x ~/bin/make.cross
# https://github.com/0day-ci/linux/commit/7d6cb920cac7d125589fb70381b8ab199d7f0d67
git remote add linux-review https://github.com/0day-ci/linux
git fetch --no-tags linux-review Martin-Kepplinger/scsi-add-runtime-PM-workaround-for-SD-cardreaders/20210111-232622
git checkout 7d6cb920cac7d125589fb70381b8ab199d7f0d67
# save the attached .config to linux build tree
COMPILER_INSTALL_PATH=$HOME/0day COMPILER=gcc-9.3.0 make.cross ARCH=riscv
If you fix the issue, kindly add following tag as appropriate
Reported-by: kernel test robot <lkp@intel.com>
All errors (new ones prefixed by >>):
>> drivers/scsi/sd.c:611:21: error: 'sd_resume_runtime' undeclared here (not in a function); did you mean 'sd_suspend_runtime'?
611 | .runtime_resume = sd_resume_runtime,
| ^~~~~~~~~~~~~~~~~
| sd_suspend_runtime
drivers/scsi/sd.c: In function 'sd_remove':
drivers/scsi/sd.c:3513:8: warning: variable 'devt' set but not used [-Wunused-but-set-variable]
3513 | dev_t devt;
| ^~~~
drivers/scsi/sd.c: In function 'sd_resume_runtime':
drivers/scsi/sd.c:3705:6: warning: unused variable 'ret' [-Wunused-variable]
3705 | int ret;
| ^~~
At top level:
drivers/scsi/sd.c:3702:12: warning: 'sd_resume_runtime' defined but not used [-Wunused-function]
3702 | static int sd_resume_runtime(struct device *dev)
| ^~~~~~~~~~~~~~~~~
vim +611 drivers/scsi/sd.c
604
605 static const struct dev_pm_ops sd_pm_ops = {
606 .suspend = sd_suspend_system,
607 .resume = sd_resume,
608 .poweroff = sd_suspend_system,
609 .restore = sd_resume,
610 .runtime_suspend = sd_suspend_runtime,
> 611 .runtime_resume = sd_resume_runtime,
612 };
613
---
0-DAY CI Kernel Test Service, Intel Corporation
https://lists.01.org/hyperkitty/list/kbuild-all@lists.01.org
diff --git a/drivers/scsi/sd.c b/drivers/scsi/sd.c index a3d2d4bc4a3d..ad89f8c76a27 100644 --- a/drivers/scsi/sd.c +++ b/drivers/scsi/sd.c @@ -608,7 +608,7 @@ static const struct dev_pm_ops sd_pm_ops = { .poweroff = sd_suspend_system, .restore = sd_resume, .runtime_suspend = sd_suspend_runtime, - .runtime_resume = sd_resume, + .runtime_resume = sd_resume_runtime, }; static struct scsi_driver sd_template = { @@ -3699,6 +3699,25 @@ static int sd_resume(struct device *dev) return ret; } +static int sd_resume_runtime(struct device *dev) +{ + struct scsi_disk *sdkp = dev_get_drvdata(dev); + int ret; + + if (!sdkp) /* E.g.: runtime resume at the start of sd_probe() */ + return 0; + + /* + * expect_media_change_suspend is the userspace setting and + * expecting_media_change is what is checked and cleared in the + * error path if we set it here. + */ + if (sdkp->device->expect_media_change_suspend) + sdkp->device->expecting_media_change = 1; + + return sd_resume(dev); +} + /** * init_sd - entry point for this driver (both when built in or when * a module).
Make the sd driver act appropriately when the user has set expect_media_change_suspend for a device. Signed-off-by: Martin Kepplinger <martin.kepplinger@puri.sm> --- drivers/scsi/sd.c | 21 ++++++++++++++++++++- 1 file changed, 20 insertions(+), 1 deletion(-)