Recent tests with timeouts > INT_MAX produced random error returns with usbtmc_get_stb. This was caused by assigning the return value of wait_event_interruptible_timeout to an int which overflowed to negative values. Also return value on success was the remaining number of jiffies instead of 0.
These patches fix all the cases where the return of wait_event_interruptible_timeout was assigned to an int and the case of the remaining jiffies return in usbtmc_get_stb.
Patch 1: Fixes usbtmc_get_stb Patch 2: Fixes usbtmc488_ioctl_wait_srq Patch 3: Fixes usbtmc_generic_read
Dave Penkler (3): usb: usbtmc: Fix erroneous get_stb ioctl error returns usb: usbtmc: Fix erroneous wait_srq ioctl return usb: usbtmc: Fix erroneous generic_read ioctl return
drivers/usb/class/usbtmc.c | 53 ++++++++++++++++++++++---------------- 1 file changed, 31 insertions(+), 22 deletions(-)
-- Changes V1 => V2 Add cc to stable line V2 => V3 Add susbsystem to cover letter 2.49.0