On parisc I see this UBSAN warning with a sym53c896: UBSAN: Undefined behaviour in ./drivers/scsi/sym53c8xx_2/sym_hipd.c:762:24 index -1903078336 is out of range for type 'u32 [7]' Avoid this warning by switching to dev64_ul(). Signed-off-by: Helge Deller <deller@xxxxxx> diff --git a/drivers/scsi/sym53c8xx_2/sym_hipd.c b/drivers/scsi/sym53c8xx_2/sym_hipd.c index 6b349e3..15ff285a9 100644 --- a/drivers/scsi/sym53c8xx_2/sym_hipd.c +++ b/drivers/scsi/sym53c8xx_2/sym_hipd.c @@ -759,7 +759,7 @@ static int sym_prepare_setting(struct Scsi_Host *shost, struct sym_hcb *np, stru /* * Maximum synchronous period factor supported by the chip. */ - period = (11 * div_10M[np->clock_divn - 1]) / (4 * np->clock_khz); + period = div64_ul(11 * div_10M[np->clock_divn - 1], 4 * np->clock_khz); np->maxsync = period > 2540 ? 254 : period / 10; /*
