Prev: VFS scalability git tree
Next: [Bug #16257] sysfs changes break hwsim and bnep drivers
From: Magnus Damm on 23 Jul 2010 07:20
2010/7/20 Yusuke Goda <yusuke.goda.sx(a)renesas.com>:
> This patch updates ack_mmc_irqs() to acknowledge using write instead
> of read-modify-write. Without this fix the old read-modify-write
> implementation may acknowledge interrupt sources by mistake. The
> driver may if so lock-up waiting forever for an interrupt that will
> never come. Observed with the TMIO_STAT_RXRDY bit together with CMD53
> on AR6002 and BCM4318 SDIO cards in polled mode.
>
> Signed-off-by: Yusuke Goda <yusuke.goda.sx(a)renesas.com>

Simple testing with a BCM4318 card and a MMC card on sh7372 and SDHI
shows no problems.

Acked-by: Magnus Damm <damm(a)opensource.se>
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo(a)vger.kernel.org
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/
 | 
Pages: 1
Prev: VFS scalability git tree
Next: [Bug #16257] sysfs changes break hwsim and bnep drivers