Hi Wolfram-san, Thank you for the patches! > From: Wolfram Sang, Sent: Friday, June 25, 2021 12:16 AM > > See patch 1 for a description of the problem. This series implements the > alternative approach suggested by Adrian (thanks!). It also adds some > documentation and a minor cleanup which I came up with while working on > the fix. Patch 1 can go to stable as is, the rest built on top of that. Perhaps, we can add a Fixes tag into the patch 1 like below? Fixes: bd11e8bd03ca ("mmc: core: Flag re-tuning is needed on CRC errors") > This series fixes the performance issue which we saw when injecting CRC > errors on Renesas R-Car Gen3 hardware. > > Looking forward to comments! The patches look good to me. So, Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> And, I tested on my environment (r8a77951-salvator-xs) with local error injection, and the performance issue disappeared. So, Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@xxxxxxxxxxx> Best regards, Yoshihiro Shimoda