On Friday, August 28, 2015 at 03:50:20 PM, Lukasz Majewski wrote:
The commit: d9dbb97be0e4a550457aec5f11afefb446169c90 "mmc: dw_mmc: Zap endless timeout" removed endless loop waiting for end of dw mmc transfer.
For some workloads - dfu test @ Odroid XU3 (sending 8MiB file) - and SD cards (e.g. MicroSD Kingston 4GiB, Adata 4GiB) the default timeout is to short.
The new value - 20 seconds - takes into account the situation when SD card triggers internal clean up. Such process may take more than 10 seconds on some cards.
What happens if you pull the SD card out of the slot during such a process?
Also, where did you find out there is such "cleanup" mechanism please ?
Signed-off-by: Lukasz Majewski l.majewski@samsung.com Cc: Marek Vasut marex@denx.de Cc: Pantelis Antoniou panto@antoniou-consulting.com Cc: Tom Rini trini@konsulko.com
drivers/mmc/dw_mmc.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/mmc/dw_mmc.c b/drivers/mmc/dw_mmc.c index 77b87e0..21a92d2 100644 --- a/drivers/mmc/dw_mmc.c +++ b/drivers/mmc/dw_mmc.c @@ -213,7 +213,7 @@ static int dwmci_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd,
if (data) { start = get_timer(0);
timeout = 1000;
timeout = 20000;
Best regards, Marek Vasut