On 31/05/23 14:34, Marek Vasut wrote:
> On 5/31/23 07:46, Adrian Hunter wrote:
>> On 31/05/23 03:27, Marek Vasut wrote:
>>> This reverts commit 08ebf903af57cda6d773f3dd1671b64f73b432b8.
>>>
>>> On STM32MP153C DHCOR DRC Compact with microSD card
>>> Kingston Canvas Go! Plus MicroSDXC I 64 GiB U3/V30/A2 SDCG3/64GB
>>> it is no longer possible to mount ext4 filesystem.
>>>
>>> Git bisect points to this commit which is being reverted here. A bit of
>>> investigation shows that for non-working microSD cards
>>> cache_enabled=TRUE fua_enabled=false
>>> For working microSD card (Kingston Canvas React Plus, MicroSDXC II
>>> 64 GiB U3/V90/A1 SDCR2/64GB)
>>> cache_enabled=FALSE fua_enabled=false
>>>
>>> It seems enabling the cache for SD cards causes the issue. Before the
>>> reverted commit, the cache was not reported enabled for SD cards. I am
>>> not sure whether such blunt revert is the correct solution however, any
>>> ideas ?
>>
>> This does not disable the cache, it disables the block layer from issuing
>> cache flushes (by telling it there is no cache being used).
>>
>> It would be good to know what commands are failing, which should be visible
>> in the kernel messages if dynamic debug is enabled:
>>
>> Dynamic debug for mmc
>> ---------------------
>>
>> Kernel must be configured:
>>
>> CONFIG_DYNAMIC_DEBUG=y
>>
>> To enable mmc debug via sysfs:
>>
>> echo 'file drivers/mmc/core/* +p' > /sys/kernel/debug/dynamic_debug/control
>> echo 'file drivers/mmc/host/* +p' > /sys/kernel/debug/dynamic_debug/control
>>
>> To enable mmc debug via kernel command line:
>>
>> dyndbg="file drivers/mmc/core/* +p;file drivers/mmc/host/* +p"
>>
>> To disable mmc debug:
>>
>> echo 'file drivers/mmc/core/* -p' > /sys/kernel/debug/dynamic_debug/control
>> echo 'file drivers/mmc/host/* -p' > /sys/kernel/debug/dynamic_debug/control
>>
>> More general information in kernel documentation in kernel tree:
>>
>> Documentation/admin-guide/dynamic-debug-howto.rst
>
> Log is below, I added newlines around the mount failure.
> Do you see anything problematic there ?
>
> $ echo 'file drivers/mmc/core/* +p' > /sys/kernel/debug/dynamic_debug/control ; echo 'file drivers/mmc/host/* +p' > /sys/kernel/debug/dynamic_debug/control ; echo 8 > /proc/sys/kernel/printk ; mount /dev/mmcblk1p4 /mnt
> [ 61.061029] <mmc1: starting CMD23 arg 00000002 flags 00000015>
> [ 61.065637] mmc1: starting CMD18 arg 00002002 flags 000000b5
> [ 61.071144] mmc1: blksz 512 blocks 2 flags 00000200 tsac 100 ms nsac 0
> [ 61.078096] mmc1: CMD12 arg 00000000 flags 00000095
> [ 61.083302] mmci-pl18x 58005000.mmc: blksz 0200 blks 0002 flags 00000200
> [ 61.090012] mmci-pl18x 58005000.mmc: op 17 arg 00000002 flags 00000015
> [ 61.096531] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 61.102332] mmci-pl18x 58005000.mmc: op 12 arg 00002002 flags 000000b5
> [ 61.108836] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.114575] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000140
> [ 61.120371] mmc1: req done <CMD23>: 0: 00000900 00000000 00000000 00000000
> [ 61.127178] mmc1: req done (CMD18): 0: 00000900 00000000 00000000 00000000
> [ 61.134084] mmc1: 1024 bytes transferred: 0
> [ 61.138658] mmc1: (CMD12): 0: 00000000 00000000 00000000 00000000
> [ 61.145533] <mmc1: starting CMD23 arg 00000008 flags 00000015>
> [ 61.150946] mmc1: starting CMD18 arg 00002000 flags 000000b5
> [ 61.156609] mmc1: blksz 512 blocks 8 flags 00000200 tsac 100 ms nsac 0
> [ 61.163426] mmc1: CMD12 arg 00000000 flags 00000095
> [ 61.168759] mmci-pl18x 58005000.mmc: blksz 0200 blks 0008 flags 00000200
> [ 61.175368] mmci-pl18x 58005000.mmc: op 17 arg 00000008 flags 00000015
> [ 61.181985] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 61.187682] mmci-pl18x 58005000.mmc: op 12 arg 00002000 flags 000000b5
> [ 61.194185] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.199979] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000140
> [ 61.205769] mmc1: req done <CMD23>: 0: 00000900 00000000 00000000 00000000
> [ 61.212574] mmc1: req done (CMD18): 0: 00000900 00000000 00000000 00000000
> [ 61.219478] mmc1: 4096 bytes transferred: 0
> [ 61.224050] mmc1: (CMD12): 0: 00000000 00000000 00000000 00000000
> [ 61.231166] <mmc1: starting CMD23 arg 00000002 flags 00000015>
> [ 61.236378] mmc1: starting CMD18 arg 00002002 flags 000000b5
> [ 61.241983] mmc1: blksz 512 blocks 2 flags 00000200 tsac 100 ms nsac 0
> [ 61.248940] mmc1: CMD12 arg 00000000 flags 00000095
> [ 61.254169] mmci-pl18x 58005000.mmc: blksz 0200 blks 0002 flags 00000200
> [ 61.260779] mmci-pl18x 58005000.mmc: op 17 arg 00000002 flags 00000015
> [ 61.267405] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 61.273101] mmci-pl18x 58005000.mmc: op 12 arg 00002002 flags 000000b5
> [ 61.279603] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.285431] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000140
> [ 61.291125] mmc1: req done <CMD23>: 0: 00000900 00000000 00000000 00000000
> [ 61.298032] mmc1: req done (CMD18): 0: 00000900 00000000 00000000 00000000
> [ 61.304937] mmc1: 1024 bytes transferred: 0
> [ 61.309409] mmc1: (CMD12): 0: 00000000 00000000 00000000 00000000
> [ 61.316256] <mmc1: starting CMD23 arg 00000008 flags 00000015>
> [ 61.321768] mmc1: starting CMD18 arg 00002000 flags 000000b5
> [ 61.327459] mmc1: blksz 512 blocks 8 flags 00000200 tsac 100 ms nsac 0
> [ 61.334360] mmc1: CMD12 arg 00000000 flags 00000095
> [ 61.339459] mmci-pl18x 58005000.mmc: blksz 0200 blks 0008 flags 00000200
> [ 61.346167] mmci-pl18x 58005000.mmc: op 17 arg 00000008 flags 00000015
> [ 61.352782] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 61.358478] mmci-pl18x 58005000.mmc: op 12 arg 00002000 flags 000000b5
> [ 61.365082] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.370776] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000140
> [ 61.376565] mmc1: req done <CMD23>: 0: 00000900 00000000 00000000 00000000
> [ 61.383371] mmc1: req done (CMD18): 0: 00000900 00000000 00000000 00000000
> [ 61.390275] mmc1: 4096 bytes transferred: 0
> [ 61.394848] mmc1: (CMD12): 0: 00000000 00000000 00000000 00000000
> [ 61.401885] <mmc1: starting CMD23 arg 00000002 flags 00000015>
> [ 61.407193] mmc1: starting CMD18 arg 00002002 flags 000000b5
> [ 61.412794] mmc1: blksz 512 blocks 2 flags 00000200 tsac 100 ms nsac 0
> [ 61.419748] mmc1: CMD12 arg 00000000 flags 00000095
> [ 61.424973] mmci-pl18x 58005000.mmc: blksz 0200 blks 0002 flags 00000200
> [ 61.431582] mmci-pl18x 58005000.mmc: op 17 arg 00000002 flags 00000015
> [ 61.438204] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 61.443901] mmci-pl18x 58005000.mmc: op 12 arg 00002002 flags 000000b5
> [ 61.450404] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.456232] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000140
> [ 61.461927] mmc1: req done <CMD23>: 0: 00000900 00000000 00000000 00000000
> [ 61.468834] mmc1: req done (CMD18): 0: 00000900 00000000 00000000 00000000
> [ 61.475739] mmc1: 1024 bytes transferred: 0
> [ 61.480210] mmc1: (CMD12): 0: 00000000 00000000 00000000 00000000
> [ 61.487054] <mmc1: starting CMD23 arg 00000008 flags 00000015>
> [ 61.492462] mmc1: starting CMD18 arg 00002000 flags 000000b5
> [ 61.498251] mmc1: blksz 512 blocks 8 flags 00000200 tsac 100 ms nsac 0
> [ 61.505160] mmc1: CMD12 arg 00000000 flags 00000095
> [ 61.510260] mmci-pl18x 58005000.mmc: blksz 0200 blks 0008 flags 00000200
> [ 61.516969] mmci-pl18x 58005000.mmc: op 17 arg 00000008 flags 00000015
> [ 61.523592] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 61.529288] mmci-pl18x 58005000.mmc: op 12 arg 00002000 flags 000000b5
> [ 61.535789] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.541583] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000140
> [ 61.547271] mmc1: req done <CMD23>: 0: 00000900 00000000 00000000 00000000
> [ 61.554177] mmc1: req done (CMD18): 0: 00000900 00000000 00000000 00000000
> [ 61.561082] mmc1: 4096 bytes transferred: 0
> [ 61.565654] mmc1: (CMD12): 0: 00000000 00000000 00000000 00000000
> [ 61.572440] <mmc1: starting CMD23 arg 00000008 flags 00000015>
> [ 61.578017] mmc1: starting CMD18 arg 00002008 flags 000000b5
> [ 61.583653] mmc1: blksz 512 blocks 8 flags 00000200 tsac 100 ms nsac 0
> [ 61.590465] mmc1: CMD12 arg 00000000 flags 00000095
> [ 61.595686] mmci-pl18x 58005000.mmc: blksz 0200 blks 0008 flags 00000200
> [ 61.602396] mmci-pl18x 58005000.mmc: op 17 arg 00000008 flags 00000015
> [ 61.608915] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 61.614712] mmci-pl18x 58005000.mmc: op 12 arg 00002008 flags 000000b5
> [ 61.621215] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.627034] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000140
> [ 61.632727] mmc1: req done <CMD23>: 0: 00000900 00000000 00000000 00000000
> [ 61.639633] mmc1: req done (CMD18): 0: 00000900 00000000 00000000 00000000
> [ 61.646437] mmc1: 4096 bytes transferred: 0
> [ 61.651010] mmc1: (CMD12): 0: 00000000 00000000 00000000 00000000
> [ 61.658908] <mmc1: starting CMD23 arg 00000108 flags 00000015>
> [ 61.663421] mmc1: starting CMD18 arg 00003be8 flags 000000b5
> [ 61.669102] mmc1: blksz 512 blocks 264 flags 00000200 tsac 100 ms nsac 0
> [ 61.676155] mmc1: CMD12 arg 00000000 flags 00000095
> [ 61.681355] mmci-pl18x 58005000.mmc: blksz 0200 blks 0108 flags 00000200
> [ 61.688064] mmci-pl18x 58005000.mmc: op 17 arg 00000108 flags 00000015
> [ 61.694589] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 61.700284] mmci-pl18x 58005000.mmc: op 12 arg 00003be8 flags 000000b5
> [ 61.706887] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.712581] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 61.718372] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000100
> [ 61.724060] mmc1: req done <CMD23>: 0: 00000900 00000000 00000000 00000000
> [ 61.730965] mmc1: req done (CMD18): 0: 00000900 00000000 00000000 00000000
> [ 61.737870] mmc1: 135168 bytes transferred: 0
> [ 61.742544] mmc1: (CMD12): 0: 00000000 00000000 00000000 00000000
> [ 61.749064] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.755336] <mmc1: starting CMD23 arg 00000008 flags 00000015>
> [ 61.760649] mmc1: starting CMD18 arg 00442000 flags 000000b5
> [ 61.766327] mmc1: blksz 512 blocks 8 flags 00000200 tsac 100 ms nsac 0
> [ 61.773144] mmc1: CMD12 arg 00000000 flags 00000095
> [ 61.778489] mmci-pl18x 58005000.mmc: blksz 0200 blks 0008 flags 00000200
> [ 61.785100] mmci-pl18x 58005000.mmc: op 17 arg 00000008 flags 00000015
> [ 61.791616] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 61.797414] mmci-pl18x 58005000.mmc: op 12 arg 00442000 flags 000000b5
> [ 61.803916] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.809710] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000140
> [ 61.815399] mmc1: req done <CMD23>: 0: 00000900 00000000 00000000 00000000
> [ 61.822306] mmc1: req done (CMD18): 0: 00000900 00000000 00000000 00000000
> [ 61.829211] mmc1: 4096 bytes transferred: 0
> [ 61.833683] mmc1: (CMD12): 0: 00000000 00000000 00000000 00000000
> [ 61.833952] mmc0: starting CMD7 arg fffd0000 flags 00000015
> [ 61.840205] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.845820] mmci-pl18x 48004000.mmc: op 07 arg fffd0000 flags 00000015
> [ 61.853036] <mmc1: starting CMD23 arg 00000008 flags 00000015>
> [ 61.858074] mmci-pl18x 48004000.mmc: irq0 (data+cmd) 00000040
> [ 61.858098] mmc0: req done (CMD7): 0: 00001ed7 00000000 00000000 00000000
> [ 61.876506] mmc1: starting CMD25 arg 00002000 flags 000000b5
> [ 61.882106] mmc1: blksz 512 blocks 8 flags 00000100 tsac 3000 ms nsac 0
> [ 61.889107] mmc1: CMD12 arg 00000000 flags 0000049d
> [ 61.894346] mmci-pl18x 58005000.mmc: blksz 0200 blks 0008 flags 00000100
> [ 61.900957] mmci-pl18x 58005000.mmc: op 17 arg 00000008 flags 00000015
> [ 61.907588] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 61.913283] mmci-pl18x 58005000.mmc: op 19 arg 00002000 flags 000000b5
> [ 61.919786] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.925612] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000140
> [ 61.931309] mmc1: req done <CMD23>: 0: 00000900 00000000 00000000 00000000
> [ 61.938219] mmc1: req done (CMD25): 0: 00000900 00000000 00000000 00000000
> [ 61.945125] mmc1: 4096 bytes transferred: 0
> [ 61.949598] mmc1: (CMD12): 0: 00000000 00000000 00000000 00000000
> [ 61.956107] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.961888] mmc1: starting CMD13 arg 50480000 flags 00000195
> [ 61.967581] mmci-pl18x 58005000.mmc: op 0d arg 50480000 flags 00000195
> [ 61.974026] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 61.979718] mmc1: req done (CMD13): 0: 00000900 00000000 00000000 00000000
> [ 61.986630] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 61.992588] mmc1: starting CMD49 arg 10020a00 flags 00000035
> [ 61.998152] mmc1: blksz 512 blocks 1 flags 00000100 tsac 3000 ms nsac 0
> [ 62.005158] mmci-pl18x 58005000.mmc: blksz 0200 blks 0001 flags 00000100
> [ 62.011778] mmci-pl18x 58005000.mmc: op 31 arg 10020a00 flags 00000035
> [ 62.018317] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 62.024011] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000100
> [ 62.029801] mmc1: req done (CMD49): 0: 00000900 00000000 00000000 00000000
> [ 62.036708] mmc1: 512 bytes transferred: 0
> [ 62.041083] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 62.046988] mmc1: starting CMD48 arg 10020a00 flags 000000b5
> [ 62.052487] mmc1: blksz 512 blocks 1 flags 00000200 tsac 100 ms nsac 0
> [ 62.059443] mmci-pl18x 58005000.mmc: blksz 0200 blks 0001 flags 00000200
> [ 62.066154] mmci-pl18x 58005000.mmc: op 30 arg 10020a00 flags 000000b5
> [ 62.072688] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 62.078382] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000100
> [ 62.084173] mmc1: req done (CMD48): 0: 00000900 00000000 00000000 00000000
> [ 62.091081] mmc1: 512 bytes transferred: 0
> [ 62.095455] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
CMD48 was successful but it still became an error, which must have
been because it indicated the flush had not completed. We do not
allow for mmc_poll_for_busy() being too quick i.e. card has not
had a chance to indicate busy yet.
Please try this:
diff --git a/drivers/mmc/core/sd.c b/drivers/mmc/core/sd.c
index 72b664ed90cf..9c3123867a99 100644
--- a/drivers/mmc/core/sd.c
+++ b/drivers/mmc/core/sd.c
@@ -1313,6 +1313,8 @@ static int sd_flush_cache(struct mmc_host *host)
{
struct mmc_card *card = host->card;
u8 *reg_buf, fno, page;
+ unsigned long timeout;
+ bool expired;
u16 offset;
int err;
@@ -1338,11 +1340,15 @@ static int sd_flush_cache(struct mmc_host *host)
goto out;
}
+ timeout = jiffies + msecs_to_jiffies(SD_WRITE_EXTR_SINGLE_TIMEOUT_MS) + 1;
+again:
err = mmc_poll_for_busy(card, SD_WRITE_EXTR_SINGLE_TIMEOUT_MS, false,
MMC_BUSY_EXTR_SINGLE);
if (err)
goto out;
+ expired = time_after(jiffies, timeout);
+
/*
* Read the Flush Cache bit. The card shall reset it, to confirm that
* it's has completed the flushing of the cache.
@@ -1354,8 +1360,12 @@ static int sd_flush_cache(struct mmc_host *host)
goto out;
}
- if (reg_buf[0] & BIT(0))
- err = -ETIMEDOUT;
+ if (reg_buf[0] & BIT(0)) {
+ if (expired)
+ err = -ETIMEDOUT;
+ else
+ goto again;
+ }
out:
kfree(reg_buf);
return err;
>
>
> [ 62.101381] I/O error, dev mmcblk1, sector 8192 op 0x1:(WRITE) flags 0x800 phys_seg 1 prio class 2
> [ 62.110223] Buffer I/O error on dev mmcblk1p4, logical block 0, lost sync page write
> [ 62.117996] EXT4-fs (mmcblk1p4): I/O error while writing superblock
> [ 62.124320] EXT4-fs (mmcblk1p4): mount failed
>
>
> [ 62.129676] <mmc1: starting CMD23 arg 00000002 flags 00000015>
> [ 62.134452] mmc1: starting CMD18 arg 00002000 flags 000000b5
> [ 62.140055] mmc1: blksz 512 blocks 2 flags 00000200 tsac 100 ms nsac 0
> [ 62.147003] mmc1: CMD12 arg 00000000 flags 00000095
> [ 62.152205] mmci-pl18x 58005000.mmc: blksz 0200 blks 0002 flags 00000200
> [ 62.158915] mmci-pl18x 58005000.mmc: op 17 arg 00000002 flags 00000015
> [ 62.165431] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 62.171229] mmci-pl18x 58005000.mmc: op 12 arg 00002000 flags 000000b5
> [ 62.177734] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 62.183566] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000140
> [ 62.189262] mmc1: req done <CMD23>: 0: 00000900 00000000 00000000 00000000
> [ 62.196169] mmc1: req done (CMD18): 0: 00000900 00000000 00000000 00000000
> [ 62.202973] mmc1: 1024 bytes transferred: 0
> [ 62.207546] mmc1: (CMD12): 0: 00000000 00000000 00000000 00000000
> [ 62.213966] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 62.220406] mmc1: starting CMD17 arg 00002000 flags 000000b5
> [ 62.225497] mmc1: blksz 512 blocks 1 flags 00000200 tsac 100 ms nsac 0
> [ 62.232324] mmci-pl18x 58005000.mmc: blksz 0200 blks 0001 flags 00000200
> [ 62.239033] mmci-pl18x 58005000.mmc: op 11 arg 00002000 flags 000000b5
> [ 62.245571] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 62.251267] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000100
> [ 62.257058] mmc1: req done (CMD17): 0: 00000900 00000000 00000000 00000000
> [ 62.263966] mmc1: 512 bytes transferred: 0
> [ 62.268347] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
> [ 62.274791] mmc1: starting CMD17 arg 00002000 flags 000000b5
> [ 62.279800] mmc1: blksz 512 blocks 1 flags 00000200 tsac 100 ms nsac 0
> [ 62.286783] mmci-pl18x 58005000.mmc: blksz 0200 blks 0001 flags 00000200
> [ 62.293396] mmci-pl18x 58005000.mmc: op 11 arg 00002000 flags 000000b5
> [ 62.299912] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000040
> [ 62.305612] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000100
> [ 62.311403] mmc1: req done (CMD17): 0: 00000900 00000000 00000000 00000000
> [ 62.318309] mmc1: 512 bytes transferred: 0
> [ 62.322801] mmci-pl18x 58005000.mmc: irq0 (data+cmd) 00000000
>
> mount: mounting /dev/mmcblk1p4 on /mnt failed: Invalid argument
> ~ #
>
> [ 62.873917] mmc0: starting CMD7 arg fffd0000 flags 00000015
> [ 62.878152] mmci-pl18x 48004000.mmc: op 07 arg fffd0000 flags 00000015
> [ 62.884681] mmci-pl18x 48004000.mmc: irq0 (data+cmd) 00000040
> [ 62.890381] mmc0: req done (CMD7): 0: 00001ed7 00000000 00000000 00000000
>
