From: Marc Kleine-Budde Date: Thu, 21 Oct 2010 16:39:26 +0000 (+0200) Subject: can: janz-ican3: cleanup of ican3_to_can_frame and can_frame_to_ican3 X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=9e4d6909a273ada78cf48379e478855bc13ae0cb;p=GitHub%2Fmoto-9609%2Fandroid_kernel_motorola_exynos9610.git can: janz-ican3: cleanup of ican3_to_can_frame and can_frame_to_ican3 This patch cleans up the ICAN3 to Linux CAN frame and vice versa conversion functions: - RX: Use get_can_dlc() to limit the dlc value. - RX+TX: Don't copy the whole frame, only copy the amount of bytes specified in cf->can_dlc. Acked-by: Ira W. Snyder Tested-by: Ira W. Snyder Signed-off-by: Marc Kleine-Budde --- diff --git a/drivers/net/can/janz-ican3.c b/drivers/net/can/janz-ican3.c index 754b803fa926..b19aca591c7a 100644 --- a/drivers/net/can/janz-ican3.c +++ b/drivers/net/can/janz-ican3.c @@ -811,10 +811,10 @@ static void ican3_to_can_frame(struct ican3_dev *mod, cf->can_id |= desc->data[0] << 3; cf->can_id |= (desc->data[1] & 0xe0) >> 5; - cf->can_dlc = desc->data[1] & ICAN3_CAN_DLC_MASK; - memcpy(cf->data, &desc->data[2], sizeof(cf->data)); + cf->can_dlc = get_can_dlc(desc->data[1] & ICAN3_CAN_DLC_MASK); + memcpy(cf->data, &desc->data[2], cf->can_dlc); } else { - cf->can_dlc = desc->data[0] & ICAN3_CAN_DLC_MASK; + cf->can_dlc = get_can_dlc(desc->data[0] & ICAN3_CAN_DLC_MASK); if (desc->data[0] & ICAN3_EFF_RTR) cf->can_id |= CAN_RTR_FLAG; @@ -829,7 +829,7 @@ static void ican3_to_can_frame(struct ican3_dev *mod, cf->can_id |= desc->data[3] >> 5; /* 2-0 */ } - memcpy(cf->data, &desc->data[6], sizeof(cf->data)); + memcpy(cf->data, &desc->data[6], cf->can_dlc); } } @@ -861,7 +861,7 @@ static void can_frame_to_ican3(struct ican3_dev *mod, } /* copy the data bits into the descriptor */ - memcpy(&desc->data[6], cf->data, sizeof(cf->data)); + memcpy(&desc->data[6], cf->data, cf->can_dlc); } /*