Tested-by: Vineet Gupta Vineet.Gupta1@synopsys.com Fixes: ARC STAR 9001306872 HSDK, sdio: board crashes when copying big files
Signed-off-by: Evgeniy Didin Evgeniy.Didin@synopsys.com
CC: Alexey Brodkin abrodkin@synopsys.com CC: Eugeniy Paltsev paltsev@synopsys.com CC: Douglas Anderson dianders@chromium.org CC: Ulf Hansson ulf.hansson@linaro.org CC: linux-kernel@vger.kernel.org CC: linux-snps-arc@lists.infradead.org Cc: stable@vger.kernel.org # 9d9491a7da2a mmc: dw_mmc: Fix the DTO timeout calculation
As I said, the correct tag may be:
Reported-by: Vineet Gupta Vineet.Gupta1@synopsys.com # ARC STAR 9001306872 HSDK, sdio: board crashes when copying big files Tested-by: Vineet Gupta Vineet.Gupta1@synopsys.com Fixes: 9d9491a7da2a ("mmc: dw_mmc: Fix the DTO timeout calculation") Cc: stable@vger.kernel.org Signed-off-by: Evgeniy Didin Evgeniy.Didin@synopsys.com ... ...
Nothing changed since v2. drivers/mmc/host/dw_mmc.c | 3 ++- 1 file changed, 2 insertions(+), 1 deletion(-)
- drto_ms = DIV_ROUND_UP(MSEC_PER_SEC * drto_clks * drto_div,
- drto_ms = DIV_ROUND_UP((u64)MSEC_PER_SEC * drto_clks * drto_div, host->bus_hz);
Hmm?
#define DIV_ROUND_DOWN_ULL(ll, d) \ ({ unsigned long long _tmp = (ll); do_div(_tmp, d); _tmp; })
#define DIV_ROUND_UP_ULL(ll, d) DIV_ROUND_DOWN_ULL((ll) + (d) - 1, (d))
It uses intermediate unsigned long long _tmp for your "multiply", namely MSEC_PER_SEC * drto_clks * drto_div, which could solves the problem. So I don't see why DIV_ROUND_UP_ULL can't work for you?
/* add a bit spare time */