From mboxrd@z Thu Jan 1 00:00:00 1970 From: Magnus Damm Date: Mon, 15 Feb 2010 12:12:29 +0000 Subject: [PATCH] tmio_mmc: use 100ms mmc_detect_change() delay Message-Id: <20100215121229.23116.16376.sendpatchset@t400s> List-Id: MIME-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit To: linux-mmc@vger.kernel.org Cc: Magnus Damm , akpm@linux-foundation.org, linux-sh@vger.kernel.org From: Magnus Damm This patch changes the tmio_mmc driver to wait 100ms before checking the card detect status. This type of delay is quite common among mmc drivers, it seems that most hardware platforms need to give the hardware some time to settle before checking card availabilty. Hotplug is half-broken without this patch on the sh7724 Ecovec board. Hot plugging seems ok but eject is never detected without this patch. Signed-off-by: Magnus Damm --- drivers/mmc/host/tmio_mmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) --- 0001/drivers/mmc/host/tmio_mmc.c +++ work/drivers/mmc/host/tmio_mmc.c 2010-02-15 20:28:15.000000000 +0900 @@ -323,7 +323,7 @@ static irqreturn_t tmio_mmc_irq(int irq, if (ireg & (TMIO_STAT_CARD_INSERT | TMIO_STAT_CARD_REMOVE)) { ack_mmc_irqs(host, TMIO_STAT_CARD_INSERT | TMIO_STAT_CARD_REMOVE); - mmc_detect_change(host->mmc, 0); + mmc_detect_change(host->mmc, msecs_to_jiffies(100)); } /* CRC and other errors */