diff options
| author | Ronald Wahl <[email protected]> | 2024-12-11 21:52:00 +0100 |
|---|---|---|
| committer | Jaehoon Chung <[email protected]> | 2024-12-16 11:24:42 +0900 |
| commit | 822afeb7bf84ca1c9289a61ea99604b4deb8e091 (patch) | |
| tree | 573717712058173731c716d7cb5541170731a6b8 /drivers | |
| parent | 50334151c02077f16613b0a082d95640800ba60e (diff) | |
mmc: Fix potential timer value truncation
On 64bit systems the timer value might be truncated to a 32bit value
causing malfunctions. For example on ARM the timer might start from 0
again only after a cold reset. The 32bit overflow occurs after a bit
more than 49 days (1000 Hz counter) so booting after that time may lead
to a surprise because the board might become stuck requiring a cold
reset.
Signed-off-by: Ronald Wahl <[email protected]>
Cc: Peng Fan <[email protected]>
Cc: Jaehoon Chung <[email protected]>
Reviewed-by: Jaehoon Chung <[email protected]>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/mmc.c | 5 |
1 files changed, 3 insertions, 2 deletions
diff --git a/drivers/mmc/mmc.c b/drivers/mmc/mmc.c index efe98354a0f..799586891af 100644 --- a/drivers/mmc/mmc.c +++ b/drivers/mmc/mmc.c @@ -750,7 +750,7 @@ static int mmc_send_op_cond(struct mmc *mmc) { int err, i; int timeout = 1000; - uint start; + ulong start; /* Some cards seem to need this */ mmc_go_idle(mmc); @@ -844,7 +844,8 @@ int mmc_send_ext_csd(struct mmc *mmc, u8 *ext_csd) static int __mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value, bool send_status) { - unsigned int status, start; + ulong start; + unsigned int status; struct mmc_cmd cmd; int timeout_ms = DEFAULT_CMD6_TIMEOUT_MS; bool is_part_switch = (set == EXT_CSD_CMD_SET_NORMAL) && |