Re: SDIO wifi card works with 2.6.36, not with 3.2

[Xiangfu Liu <xiangfu.z@gmail.com>]

Hi

I am not sure if this is the root cause. by revert this commit.[1]
our SDIO ks7010 wifi card work again in linux 3.0.

check out this emails, under mailing list:
   SDIO single IRQ optimization breaks libertas
   http://permalink.gmane.org/gmane.linux.kernel.mmc/8338


[1]
Revert "mmc: sdio: optimized SDIO IRQ handling for single irq"
This reverts commit 06e8935febe687e2a561707d4c7ca4245d261dbe.



On 11/26/2011 06:26 AM, Thomas Langås wrote:
> I have a slightly weird problem; I have an Samsung Exynos 4210 with an BCM4329
> wifi-chip connected through the MMC-bus using SDIO.
>
> This setup works fine with 2.6.35.7 Android-kernel, but not with
> 3.2-rc1 (non-Android).
>
> CMD52 read/write works correctly, but CMD53 only works with reads. All CMD53
> writes fails.
>
> Here's an example output of the errorlog:
> [  267.175000] brcmf_sdioh_request_word: rw=1, func=1, addr=0x0bf98, nbytes=4
> [  267.175000] mmc1: starting CMD53 arg 957f3004 flags 000001b5
> [  267.175000] mmc1:     blksz 4 blocks 1 flags 00000100 tsac 1000 ms nsac 0
> [  267.175000] sdhci [sdhci_irq()]: *** mmc1 got interrupt: 0x00208003
> [  267.175000] mmc1: req done (CMD53): 0: 00001000 00000000 00000000 00000000
> [  267.175000] mmc1:     0 bytes transferred: -84
>
> I've checked the setup registers (pad-controlls to see that all pads
> are set to mmc
> instead of gpio, and mmc registers).  All are identical on Android and
> non-Android,
> so it doesn'tseem like the problem is there at least.
>
> Any ideas on how to proceed with locating the problem?
>