brcmfmac: disable command decode in sdio_aos
authorWright Feng <wright.feng@cypress.com>
Wed, 21 Nov 2018 07:53:52 +0000 (07:53 +0000)
committerKalle Valo <kvalo@codeaurora.org>
Thu, 13 Dec 2018 14:57:27 +0000 (16:57 +0200)
commit29f6589140a10ece8c1d73f58043ea5b3473ab3e
treee0b84900790c04b4ff2622ff9478356430090226
parent2f2d389efda4caa4c1b69cb4fa2ab217f0fe6d6f
brcmfmac: disable command decode in sdio_aos

AOS is a part of the SDIOD core that becomes active when the rest of
SDIOD is sleeping to keep SDIO bus alive responding to reduced set of
commands.

Transaction between AOS and SDIOD is not protected, and if cmd 52 is
received in AOS and in the middle of response state changed from AOS to
SDIOD, response is corrupted and it causes to SDIO Host controller to
hang.

Command decode for below chips are disabled in this commit:
 - 4339
 - 4345
 - 4354
 - 4373

Reviewed-by: Arend van Spriel <arend.vanspriel@broadcom.com>
Signed-off-by: Wright Feng <wright.feng@cypress.com>
Signed-off-by: Double Lo <double.lo@cypress.com>
Signed-off-by: Madhan Mohan R <madhanmohan.r@cypress.com>
Signed-off-by: Chi-Hsien Lin <chi-hsien.lin@cypress.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
drivers/net/wireless/broadcom/brcm80211/brcmfmac/sdio.c