Revision 2de0b42da263c97d330d276f5ccf7c4470e3324f authored by Douglas Anderson on 17 June 2019, 17:56:51 UTC, committed by Ulf Hansson on 18 June 2019, 11:30:29 UTC
There are certain cases, notably when transitioning between sleep and active state, when Broadcom SDIO WiFi cards will produce errors on the SDIO bus. This is evident from the source code where you can see that we try commands in a loop until we either get success or we've tried too many times. The comment in the code reinforces this by saying "just one write attempt may fail" Unfortunately these failures sometimes end up causing an "-EILSEQ" back to the core which triggers a retuning of the SDIO card and that blocks all traffic to the card until it's done. Let's disable retuning around the commands we expect might fail. Cc: stable@vger.kernel.org #v4.18+ Signed-off-by: Douglas Anderson <dianders@chromium.org> Acked-by: Adrian Hunter <adrian.hunter@intel.com> Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com> Acked-by: Kalle Valo <kvalo@codeaurora.org> Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
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Apache-2.0 | -rw-r--r-- | 9.8 KB |
CDDL-1.0 | -rw-r--r-- | 19.1 KB |
MPL-1.1 | -rw-r--r-- | 25.7 KB |
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