HW: Beagleboard rev. C2 and C4 Processor: OMAP3 Kernel: 2.6.35-rc2 Driver: mmci-omap-hs I am faced with an SDHC card problem on a beagleboard. Some cards cannot be initialized on startup while others work perfectly. I tracked the issue down to one single kernel config: PREEMPT_VOLUNTARY. When going from PREEMPT_VOLUNTARY to PREEMPT_NONE the problem goes away. When booting, a failing card (PREEMPT_VOLUNTARY) will output the following: [ 2.283355] mmc0: error -110 whilst initialising SD card I have also seen transfer errors such as this one: [ 105.343780] mmcblk0: error -110 transferring data, sector 798431, nr 26, card status 0xc00 When working properly (PREEMPT_NONE), you get: [ 27.026519] mmc0: new high speed SDHC card at address 0007 [ 27.075775] mmcblk0: mmc0:0007 SD08G 7.49 GiB We seem to have a little timing problem - has anyone seen the same issue ? Can driver "mmci-omap-hs" actually work under PREEMPT_VOLUNTARY ? Thanks, Mathieu. -- To unsubscribe from this list: send the line "unsubscribe linux-omap" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
