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authorMarc Kleine-Budde <mkl@pengutronix.de>2010-10-21 18:39:26 +0200
committerMarc Kleine-Budde <mkl@pengutronix.de>2012-07-20 17:48:53 +0200
commit9e4d6909a273ada78cf48379e478855bc13ae0cb (patch)
treebb07dcb34ec9019c4ee5b98b2f8eb82e0941b863 /drivers/net/can/janz-ican3.c
parent007890d726602c925077381500f0b633cfacd711 (diff)
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 <iws@ovro.caltech.edu> Tested-by: Ira W. Snyder <iws@ovro.caltech.edu> Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Diffstat (limited to 'drivers/net/can/janz-ican3.c')
-rw-r--r--drivers/net/can/janz-ican3.c10
1 files changed, 5 insertions, 5 deletions
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);
}
/*