Tested-by: Vineet Gupta <[email protected]>
Fixes: ARC STAR 9001306872 HSDK, sdio: board crashes when copying big files
Signed-off-by: Evgeniy Didin <[email protected]>
CC: Alexey Brodkin <[email protected]>
CC: Eugeniy Paltsev <[email protected]>
CC: Douglas Anderson <[email protected]>
CC: Ulf Hansson <[email protected]>
CC: [email protected]
CC: [email protected]
Cc: <[email protected]> # 9d9491a7da2a mmc: dw_mmc: Fix the DTO timeout
calculation
As I said, the correct tag may be:
Reported-by: Vineet Gupta <[email protected]> # ARC STAR
9001306872 HSDK, sdio: board crashes when copying big files
Tested-by: Vineet Gupta <[email protected]>
Fixes: 9d9491a7da2a ("mmc: dw_mmc: Fix the DTO timeout calculation")
Cc: <[email protected]>
Signed-off-by: Evgeniy Didin <[email protected]>
...
...
---
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 */
