diff options
| author | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2025-09-28 10:19:10 +0900 |
|---|---|---|
| committer | Takashi Sakamoto <o-takashi@sakamocchi.jp> | 2025-09-28 10:20:30 +0900 |
| commit | 40d4c761200b796a44bf2c7675ae09c87b17d4af (patch) | |
| tree | b558f241c27f0c485934700feb42c6805af2c556 | |
| parent | e216c49b3ebb0729c50870ebfb8b798376dc1edf (diff) | |
firewire: core: fix undefined reference error in ARM EABI
For ARM EABI, GCC generates a reference to __aeabi_uldivmod when compiling
a division of 64-bit integer with 32-bit integer. This function is not
available in Linux kernel. In such cases, helper macros are defined in
include/linux/math64.h.
This commit replaces the division with div_u64().
Fixes: 8ec6a8ec23b9 ("firewire: core: suppress overflow warning when computing jiffies from isochronous cycle")
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202509270428.FZaO2PPq-lkp@intel.com/
Link: https://lore.kernel.org/r/20250928011910.581475-1-o-takashi@sakamocchi.jp
Signed-off-by: Takashi Sakamoto <o-takashi@sakamocchi.jp>
| -rw-r--r-- | drivers/firewire/core.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/firewire/core.h b/drivers/firewire/core.h index 2dd715a580ac..e67395ce26b5 100644 --- a/drivers/firewire/core.h +++ b/drivers/firewire/core.h @@ -30,7 +30,7 @@ struct fw_packet; // This is the arbitrary value we use to indicate a mismatched gap count. #define GAP_COUNT_MISMATCHED 0 -#define isoc_cycles_to_jiffies(cycles) usecs_to_jiffies((u32)((u64)(cycles) * USEC_PER_SEC / 8000)) +#define isoc_cycles_to_jiffies(cycles) usecs_to_jiffies((u32)div_u64((u64)cycles * USEC_PER_SEC, 8000)) extern __printf(2, 3) void fw_err(const struct fw_card *card, const char *fmt, ...); |