Messages in this thread | | | Date | Thu, 23 Nov 2006 16:03:35 +0000 | From | Russell King <> | Subject | Re: [PATCH] fix random SD/MMC card recognition failures on ARM Versatile |
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On Thu, Nov 23, 2006 at 06:46:06PM +0300, Vitaly Wool wrote: > Hello Pierre, > > currently sometimes the SD/MMC card inserted results in recognition failure on ARM Versatile board: > > <<<Plug in MMC card>>> > > root@versatile:~# mmcblk0: mmc0:0001 SDMB-32 31360KiB > mmcblk0:<3>mmcblk0: error 3 transferring data > end_request: I/O error, dev mmcblk0, sector 0 > Buffer I/O error on device mmcblk0, logical block 0 > mmcblk0: error 3 transferring data > end_request: I/O error, dev mmcblk0, sector 0 > Buffer I/O error on device mmcblk0, logical block 0 > unable to read partition table > > This patch fixes the problem.
Doubtful. mmci_stop_data() already does this, which will be called immediately prior to mmci_request_end(). So you're doubling up the writes to registers again.
Since this is not the first occurance that you've had to do this with your board (the other being the SIC) I suggest that your board is faulty in some way, causing writes to registers to be occasionally dropped.
-- Russell King Linux kernel 2.6 ARM Linux - http://www.arm.linux.org.uk/ maintainer of: - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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