Hi
I have the following error when trying to access the SD-card on my MX25
device:
root@mx25-noah:~$> mount /media/card/
root@mx25-noah:~$> df -kh /media/card
Filesystem Size Used Available Use% Mounted on
/dev/mmcblk0p1 123.6M 2.7M 120.9M 2% /media/card
root@mx25-noah:~$> touch /media/card/file
[ 82.982920] mmcblk0: error -110 transferring data, sector 559, nr 1,
cmd response 0x900, card status 0x0
[ 82.993544] end_request: I/O error, dev mmcblk0, sector 559
[ 82.999169] Buffer I/O error on device mmcblk0p1, logical block 497
[ 83.005458] lost page write due to I/O error on mmcblk0p1
[ 83.013922] mmcblk0: error -84 transferring data, sector 559, nr 1,
cmd
response 0x900, card status 0x0
[ 83.024114] end_request: I/O error, dev mmcblk0, sector 559
[ 83.029965] FAT-fs (mmcblk0p1): Directory bread(block 497) failed
[ 83.038051] mmcblk0: error -84 transferring data, sector 560, nr 1,
cmd
response 0x900, card status 0x0
[ 83.048579] end_request: I/O error, dev mmcblk0, sector 560
[ 83.054205] Buffer I/O error on device mmcblk0p1, logical block 498
[ 83.060494] lost page write due to I/O error on mmcblk0p1
touch: /media/card/file: Input/output error
I have compiled the kernel 3.3-rc5 with driver core debug support and I
get the following information:
root@mx25-noah:~$> dmesg | grep -i mmc
[ 0.228098] bus: 'mmc': registered
[ 0.228139] device class 'mmc_host': registering
[ 1.405180] bus: 'mmc': add driver mmcblk
[ 1.429969] device: 'mmc0::': device_add
[ 1.430249] PM: Adding info for No Bus:mmc0::
[ 1.430837] Registered led device: mmc0::
[ 1.430884] device: 'mmc0': device_add
[ 1.431114] PM: Adding info for No Bus:mmc0
[ 1.432953] mmc0: SDHCI controller on sdhci-esdhc-imx25.0
[sdhci-esdhc-imx25.0] using DMA
[ 1.771322] mmc0: host does not support reading read-only switch.
assuming write-enable.
[ 1.798584] mmc0: new high speed SD card at address 0002
[ 1.804018] device: 'mmc0:0002': device_add
[ 1.804283] bus: 'mmc': add device mmc0:0002
[ 1.804445] PM: Adding info for mmc:mmc0:0002
[ 1.815198] bus: 'mmc': driver_probe_device: matched device
mmc0:0002
with driver mmcblk
[ 1.815256] bus: 'mmc': really_probe: probing driver mmcblk with
device
mmc0:0002
[ 1.825154] mmcblk0: mmc0:0002 00000 1.86 GiB
[ 1.835076] device: 'mmcblk0': device_add
[ 1.835680] PM: Adding info for No Bus:mmcblk0
[ 1.849286] mmcblk0: p1 p2
[ 1.852252] device: 'mmcblk0p1': device_add
[ 1.855232] PM: Adding info for No Bus:mmcblk0p1
[ 1.855371] device: 'mmcblk0p2': device_add
[ 1.855874] PM: Adding info for No Bus:mmcblk0p2
[ 1.866667] driver: 'mmc0:0002': driver_bound: bound to device
'mmcblk'
[ 1.866720] bus: 'mmc': really_probe: bound device mmc0:0002 to
driver
mmcblk
[ 82.982920] mmcblk0: error -110 transferring data, sector 559, nr 1,
cmd response 0x900, card status 0x0
[ 82.993544] end_request: I/O error, dev mmcblk0, sector 559
[ 82.999169] Buffer I/O error on device mmcblk0p1, logical block 497
[ 83.005458] lost page write due to I/O error on mmcblk0p1
[ 83.013922] mmcblk0: error -84 transferring data, sector 559, nr 1,
cmd
response 0x900, card status 0x0
[ 83.024114] end_request: I/O error, dev mmcblk0, sector 559
[ 83.029965] FAT-fs (mmcblk0p1): Directory bread(block 497) failed
[ 83.038051] mmcblk0: error -84 transferring data, sector 560, nr 1,
cmd
response 0x900, card status 0x0
[ 83.048579] end_request: I/O error, dev mmcblk0, sector 560
[ 83.054205] Buffer I/O error on device mmcblk0p1, logical block 498
[ 83.060494] lost page write due to I/O error on mmcblk0p1
The same device booted into a 2.6.39.3 kernel works just fine. The
initialization of the esdhc driver in the device section is as follows:
imx25_add_sdhci_esdhc_imx(0, NULL);
Changing it to a pdata init as shown below does not change anything
with
regard to the failure:
imx25_add_sdhci_esdhc_imx(0, &noah_esdhc_pdata);
static const struct esdhc_platform_data noah_esdhc_pdata __initconst =
{
.wp_gpio = -EINVAL,
.cd_gpio = -EINVAL,
.wp_type = ESDHC_WP_NONE,
.cd_type = ESDHC_CD_NONE,
};
What could have changed between 2.6.39.3 and 3.3-rc5 to trigger this
behaviour? A quick look at
git diff v2.6.39 drivers/mmc/host/sdhci-esdhc-imx.c
only confuses me with regard to this issue.
Regards
--
Joan C. Abelaira
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