On Tue, Nov 21, 2023 at 06:02:23PM +0100, Damian Muszynski wrote: > The qat_rl sysfs attribute group is registered within the adf_dev_start() > function, alongside other driver components. > If any of the functions preceding the group registration fails, > the adf_dev_start() function returns, and the caller, to undo the > operation, invokes adf_dev_stop() followed by adf_dev_shutdown(). > However, the current flow lacks information about whether the > registration of the qat_rl attribute group was successful or not. > > In cases where this condition is encountered, an error similar to > the following might be reported: > > 4xxx 0000:6b:00.0: Starting device qat_dev0 > 4xxx 0000:6b:00.0: qat_dev0 started 9 acceleration engines > 4xxx 0000:6b:00.0: Failed to send init message > 4xxx 0000:6b:00.0: Failed to start device qat_dev0 > sysfs group 'qat_rl' not found for kobject '0000:6b:00.0' > ... > sysfs_remove_groups+0x2d/0x50 > adf_sysfs_rl_rm+0x44/0x70 [intel_qat] > adf_rl_stop+0x2d/0xb0 [intel_qat] > adf_dev_stop+0x33/0x1d0 [intel_qat] > adf_dev_down+0xf1/0x150 [intel_qat] > ... > 4xxx 0000:6b:00.0: qat_dev0 stopped 9 acceleration engines > 4xxx 0000:6b:00.0: Resetting device qat_dev0 > > To prevent attempting to remove attributes from a group that has not > been added yet, a flag named 'sysfs_added' is introduced. This flag > is set to true upon the successful registration of the attribute group. > > Fixes: d9fb8408376e ("crypto: qat - add rate limiting feature to qat_4xxx") > Signed-off-by: Damian Muszynski <damian.muszynski@xxxxxxxxx> > Reviewed-by: Giovanni Cabiddu <giovanni.cabiddu@xxxxxxxxx> > Reviewed-by: Ahsan Atta <ahsan.atta@xxxxxxxxx> > --- > drivers/crypto/intel/qat/qat_common/adf_rl.h | 1 + > drivers/crypto/intel/qat/qat_common/adf_sysfs_rl.c | 8 ++++++++ > 2 files changed, 9 insertions(+) Patch applied. Thanks. -- Email: Herbert Xu <herbert@xxxxxxxxxxxxxxxxxxx> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt