lkml.org 
[lkml]   [2008]   [Sep]   [23]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
    Patch in this message
    /
    Date
    From
    SubjectSDHCI: timeout during data transfer
    Hi,
    I'm seeing timeout errors when transfering "big" (over 1MB or so) files to a SD
    card (small files are ok):

    [ 251.956666] mmcblk0: error -110 transferring data
    [ 251.979810] end_request: I/O error, dev mmcblk0, sector 1572758
    [ 251.981477] Buffer I/O error on device mmcblk0p1, logical block 1572742
    [ 251.983198] lost page write due to I/O error on mmcblk0p1
    [ 251.983788] end_request: I/O error, dev mmcblk0, sector 1572759
    [ 251.983788] Buffer I/O error on device mmcblk0p1, logical block 1572743
    [ 251.983788] lost page write due to I/O error on mmcblk0p1
    [ 251.983788] end_request: I/O error, dev mmcblk0, sector 1572760
    [ 251.983788] Buffer I/O error on device mmcblk0p1, logical block 1572744
    [ 251.983788] lost page write due to I/O error on mmcblk0p1
    [ 251.983788] end_request: I/O error, dev mmcblk0, sector 1572761
    [ 251.983788] Buffer I/O error on device mmcblk0p1, logical block 1572745
    [ 251.983788] lost page write due to I/O error on mmcblk0p1
    [ 253.513336] mmcblk0: error -110 transferring data
    (trashed FS here)

    kernel in use is 2.6.27-rc6, and this is the controller:

    09:01.1 SD Host controller: Ricoh Co Ltd R5C822 SD/SDIO/MMC/MS/MSPro Host Adapter (rev 22)
    09:01.2 System peripheral: Ricoh Co Ltd R5C843 MMC Host Controller (rev 12)
    09:01.3 System peripheral: Ricoh Co Ltd R5C592 Memory Stick Bus Host Adapter (rev 12)
    09:01.4 System peripheral: Ricoh Co Ltd xD-Picture Card Controller (rev 12)

    Googling around I found a patch[1] that introduced a quirk to address an
    off-by-one issue for the timeout value in certain controllers.

    With this patch:

    diff --git a/drivers/mmc/host/sdhci.c b/drivers/mmc/host/sdhci.c
    index e3a8133..46899ee 100644
    --- a/drivers/mmc/host/sdhci.c
    +++ b/drivers/mmc/host/sdhci.c
    @@ -575,7 +575,7 @@ static void sdhci_prepare_data(struct sdhci_host *host, struct mmc_data *data)
    host->data = data;
    host->data_early = 0;

    - count = sdhci_calc_timeout(host, data);
    + count = sdhci_calc_timeout(host, data) + 1;
    writeb(count, host->ioaddr + SDHCI_TIMEOUT_CONTROL);

    if (host->flags & SDHCI_USE_DMA)
    I don't see timeouts anymore (just for reference, I'm not suggesting to apply it
    as-is).

    Luca
    [1] http://www.gossamer-threads.com/lists/linux/kernel/937056
    --
    Dicono che il cane sia il miglior amico dell'uomo. Secondo me non e`
    vero. Quanti dei vostri amici avete fatto castrare, recentemente?


    \
     
     \ /
      Last update: 2008-09-23 23:29    [W:0.023 / U:2.928 seconds]
    ©2003-2016 Jasper Spaans. hosted at Digital OceanAdvertise on this site