From: Takashi Sakamoto Date: Sun, 28 Sep 2025 01:19:10 +0000 (+0900) Subject: firewire: core: fix undefined reference error in ARM EABI X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=40d4c761200b796a44bf2c7675ae09c87b17d4af;p=thirdparty%2Fkernel%2Fstable.git 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 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 --- 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, ...);