Hello Pierre, This is a new version of the previous patch with fixed commit text. Please apply this patch as it fixes an oops when MMC-DMA and network traffic are active at the same time; this seems to be a 2.6.27-only bug as the current au1xmmc source work fine on 2.6.26. Thank you, Manuel Lauss --- Raise the DMA block size limit from 2048 bytes to the maximum supported by the DMA controllers on the chip (64KB on Au1100, 4MB on Au1200). This gives a very small performance boost and apparently fixes an oops when MMC-DMA and network traffic are active at the same time. Signed-off-by: Manuel Lauss <mano@xxxxxxxxxxxxxxxxxxxxxxx> --- drivers/mmc/host/au1xmmc.c | 8 +++++++- 1 files changed, 7 insertions(+), 1 deletions(-) diff --git a/drivers/mmc/host/au1xmmc.c b/drivers/mmc/host/au1xmmc.c index 99b2091..d3f5561 100644 --- a/drivers/mmc/host/au1xmmc.c +++ b/drivers/mmc/host/au1xmmc.c @@ -61,7 +61,13 @@ /* Hardware definitions */ #define AU1XMMC_DESCRIPTOR_COUNT 1 -#define AU1XMMC_DESCRIPTOR_SIZE 2048 + +/* max DMA seg size: 64KB on Au1100, 4MB on Au1200 */ +#ifdef CONFIG_SOC_AU1100 +#define AU1XMMC_DESCRIPTOR_SIZE 0x0000ffff +#else /* Au1200 */ +#define AU1XMMC_DESCRIPTOR_SIZE 0x003fffff +#endif #define AU1XMMC_OCR (MMC_VDD_27_28 | MMC_VDD_28_29 | MMC_VDD_29_30 | \ MMC_VDD_30_31 | MMC_VDD_31_32 | MMC_VDD_32_33 | \ -- 1.5.6.3
