* [PATCH 1/2] can: fix assignment of error location in CAN error messages
@ 2015-11-21 17:41 Oliver Hartkopp
2015-11-21 17:41 ` [PATCH 2/2] [RFC] can: remove obsolete assignment for CAN protocol error type Oliver Hartkopp
2015-11-23 8:47 ` [PATCH 1/2] can: fix assignment of error location in CAN error messages Marc Kleine-Budde
0 siblings, 2 replies; 3+ messages in thread
From: Oliver Hartkopp @ 2015-11-21 17:41 UTC (permalink / raw)
To: linux-can; +Cc: dan.carpenter, Oliver Hartkopp
As Dan Carpenter reported in http://marc.info/?l=linux-can&m=144793696016187
the assignment of the error location in CAN error messages had some bit wise
overlaps. Indeed the value to be assigned in data[3] is no bitfield but defines
a single value which points to a location inside the CAN frame on the wire.
This patch fixes the assignments for the error locations in error messages.
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
---
drivers/net/can/c_can/c_can.c | 6 ++----
drivers/net/can/cc770/cc770.c | 2 +-
drivers/net/can/flexcan.c | 4 ++--
drivers/net/can/m_can/m_can.c | 6 ++----
drivers/net/can/pch_can.c | 3 +--
drivers/net/can/rcar_can.c | 6 +++---
drivers/net/can/ti_hecc.c | 6 ++----
drivers/net/can/usb/kvaser_usb.c | 5 ++---
drivers/net/can/usb/usb_8dev.c | 3 +--
drivers/net/can/xilinx_can.c | 5 ++---
10 files changed, 18 insertions(+), 28 deletions(-)
diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
index 5d214d1..7c9892ab 100644
--- a/drivers/net/can/c_can/c_can.c
+++ b/drivers/net/can/c_can/c_can.c
@@ -975,8 +975,7 @@ static int c_can_handle_bus_err(struct net_device *dev,
break;
case LEC_ACK_ERROR:
netdev_dbg(dev, "ack error\n");
- cf->data[3] |= (CAN_ERR_PROT_LOC_ACK |
- CAN_ERR_PROT_LOC_ACK_DEL);
+ cf->data[3] = CAN_ERR_PROT_LOC_ACK;
break;
case LEC_BIT1_ERROR:
netdev_dbg(dev, "bit1 error\n");
@@ -988,8 +987,7 @@ static int c_can_handle_bus_err(struct net_device *dev,
break;
case LEC_CRC_ERROR:
netdev_dbg(dev, "CRC error\n");
- cf->data[3] |= (CAN_ERR_PROT_LOC_CRC_SEQ |
- CAN_ERR_PROT_LOC_CRC_DEL);
+ cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
break;
default:
break;
diff --git a/drivers/net/can/cc770/cc770.c b/drivers/net/can/cc770/cc770.c
index 70a8cbb..1e37313 100644
--- a/drivers/net/can/cc770/cc770.c
+++ b/drivers/net/can/cc770/cc770.c
@@ -578,7 +578,7 @@ static int cc770_err(struct net_device *dev, u8 status)
cf->data[2] |= CAN_ERR_PROT_BIT0;
break;
case STAT_LEC_CRC:
- cf->data[3] |= CAN_ERR_PROT_LOC_CRC_SEQ;
+ cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
break;
}
}
diff --git a/drivers/net/can/flexcan.c b/drivers/net/can/flexcan.c
index 868fe94..41c0fc9 100644
--- a/drivers/net/can/flexcan.c
+++ b/drivers/net/can/flexcan.c
@@ -535,13 +535,13 @@ static void do_bus_err(struct net_device *dev,
if (reg_esr & FLEXCAN_ESR_ACK_ERR) {
netdev_dbg(dev, "ACK_ERR irq\n");
cf->can_id |= CAN_ERR_ACK;
- cf->data[3] |= CAN_ERR_PROT_LOC_ACK;
+ cf->data[3] = CAN_ERR_PROT_LOC_ACK;
tx_errors = 1;
}
if (reg_esr & FLEXCAN_ESR_CRC_ERR) {
netdev_dbg(dev, "CRC_ERR irq\n");
cf->data[2] |= CAN_ERR_PROT_BIT;
- cf->data[3] |= CAN_ERR_PROT_LOC_CRC_SEQ;
+ cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
rx_errors = 1;
}
if (reg_esr & FLEXCAN_ESR_FRM_ERR) {
diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index ef65517..9dd3ca7 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -500,8 +500,7 @@ static int m_can_handle_lec_err(struct net_device *dev,
break;
case LEC_ACK_ERROR:
netdev_dbg(dev, "ack error\n");
- cf->data[3] |= (CAN_ERR_PROT_LOC_ACK |
- CAN_ERR_PROT_LOC_ACK_DEL);
+ cf->data[3] = CAN_ERR_PROT_LOC_ACK;
break;
case LEC_BIT1_ERROR:
netdev_dbg(dev, "bit1 error\n");
@@ -513,8 +512,7 @@ static int m_can_handle_lec_err(struct net_device *dev,
break;
case LEC_CRC_ERROR:
netdev_dbg(dev, "CRC error\n");
- cf->data[3] |= (CAN_ERR_PROT_LOC_CRC_SEQ |
- CAN_ERR_PROT_LOC_CRC_DEL);
+ cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
break;
default:
break;
diff --git a/drivers/net/can/pch_can.c b/drivers/net/can/pch_can.c
index e187ca7..c131788 100644
--- a/drivers/net/can/pch_can.c
+++ b/drivers/net/can/pch_can.c
@@ -559,8 +559,7 @@ static void pch_can_error(struct net_device *ndev, u32 status)
stats->rx_errors++;
break;
case PCH_CRC_ERR:
- cf->data[3] |= CAN_ERR_PROT_LOC_CRC_SEQ |
- CAN_ERR_PROT_LOC_CRC_DEL;
+ cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
priv->can.can_stats.bus_error++;
stats->rx_errors++;
break;
diff --git a/drivers/net/can/rcar_can.c b/drivers/net/can/rcar_can.c
index 7bd5419..9161f04 100644
--- a/drivers/net/can/rcar_can.c
+++ b/drivers/net/can/rcar_can.c
@@ -251,7 +251,7 @@ static void rcar_can_error(struct net_device *ndev)
tx_errors++;
writeb(~RCAR_CAN_ECSR_ADEF, &priv->regs->ecsr);
if (skb)
- cf->data[3] |= CAN_ERR_PROT_LOC_ACK_DEL;
+ cf->data[3] = CAN_ERR_PROT_LOC_ACK_DEL;
}
if (ecsr & RCAR_CAN_ECSR_BE0F) {
netdev_dbg(priv->ndev, "Bit Error (dominant)\n");
@@ -272,7 +272,7 @@ static void rcar_can_error(struct net_device *ndev)
rx_errors++;
writeb(~RCAR_CAN_ECSR_CEF, &priv->regs->ecsr);
if (skb)
- cf->data[3] |= CAN_ERR_PROT_LOC_CRC_SEQ;
+ cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
}
if (ecsr & RCAR_CAN_ECSR_AEF) {
netdev_dbg(priv->ndev, "ACK Error\n");
@@ -280,7 +280,7 @@ static void rcar_can_error(struct net_device *ndev)
writeb(~RCAR_CAN_ECSR_AEF, &priv->regs->ecsr);
if (skb) {
cf->can_id |= CAN_ERR_ACK;
- cf->data[3] |= CAN_ERR_PROT_LOC_ACK;
+ cf->data[3] = CAN_ERR_PROT_LOC_ACK;
}
}
if (ecsr & RCAR_CAN_ECSR_FEF) {
diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index cf345cb..6eab4fe 100644
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -737,13 +737,11 @@ static int ti_hecc_error(struct net_device *ndev, int int_status,
}
if (err_status & HECC_CANES_CRCE) {
hecc_set_bit(priv, HECC_CANES, HECC_CANES_CRCE);
- cf->data[3] |= CAN_ERR_PROT_LOC_CRC_SEQ |
- CAN_ERR_PROT_LOC_CRC_DEL;
+ cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
}
if (err_status & HECC_CANES_ACKE) {
hecc_set_bit(priv, HECC_CANES, HECC_CANES_ACKE);
- cf->data[3] |= CAN_ERR_PROT_LOC_ACK |
- CAN_ERR_PROT_LOC_ACK_DEL;
+ cf->data[3] = CAN_ERR_PROT_LOC_ACK;
}
}
diff --git a/drivers/net/can/usb/kvaser_usb.c b/drivers/net/can/usb/kvaser_usb.c
index 8b17a90..022bfa1 100644
--- a/drivers/net/can/usb/kvaser_usb.c
+++ b/drivers/net/can/usb/kvaser_usb.c
@@ -944,10 +944,9 @@ static void kvaser_usb_rx_error(const struct kvaser_usb *dev,
cf->can_id |= CAN_ERR_BUSERROR | CAN_ERR_PROT;
if (es->leaf.error_factor & M16C_EF_ACKE)
- cf->data[3] |= (CAN_ERR_PROT_LOC_ACK);
+ cf->data[3] = CAN_ERR_PROT_LOC_ACK;
if (es->leaf.error_factor & M16C_EF_CRCE)
- cf->data[3] |= (CAN_ERR_PROT_LOC_CRC_SEQ |
- CAN_ERR_PROT_LOC_CRC_DEL);
+ cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
if (es->leaf.error_factor & M16C_EF_FORME)
cf->data[2] |= CAN_ERR_PROT_FORM;
if (es->leaf.error_factor & M16C_EF_STFE)
diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c
index de95b1c..017ae50 100644
--- a/drivers/net/can/usb/usb_8dev.c
+++ b/drivers/net/can/usb/usb_8dev.c
@@ -402,8 +402,7 @@ static void usb_8dev_rx_err_msg(struct usb_8dev_priv *priv,
break;
case USB_8DEV_STATUSMSG_CRC:
cf->data[2] |= CAN_ERR_PROT_UNSPEC;
- cf->data[3] |= CAN_ERR_PROT_LOC_CRC_SEQ |
- CAN_ERR_PROT_LOC_CRC_DEL;
+ cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
rx_errors = 1;
break;
case USB_8DEV_STATUSMSG_BIT0:
diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c
index fc55e8e..4c57ddf 100644
--- a/drivers/net/can/xilinx_can.c
+++ b/drivers/net/can/xilinx_can.c
@@ -618,7 +618,7 @@ static void xcan_err_interrupt(struct net_device *ndev, u32 isr)
stats->tx_errors++;
if (skb) {
cf->can_id |= CAN_ERR_ACK;
- cf->data[3] |= CAN_ERR_PROT_LOC_ACK;
+ cf->data[3] = CAN_ERR_PROT_LOC_ACK;
}
}
@@ -654,8 +654,7 @@ static void xcan_err_interrupt(struct net_device *ndev, u32 isr)
stats->rx_errors++;
if (skb) {
cf->can_id |= CAN_ERR_PROT;
- cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ |
- CAN_ERR_PROT_LOC_CRC_DEL;
+ cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
}
}
priv->can.can_stats.bus_error++;
--
2.1.4
^ permalink raw reply related [flat|nested] 3+ messages in thread* [PATCH 2/2] [RFC] can: remove obsolete assignment for CAN protocol error type
2015-11-21 17:41 [PATCH 1/2] can: fix assignment of error location in CAN error messages Oliver Hartkopp
@ 2015-11-21 17:41 ` Oliver Hartkopp
2015-11-23 8:47 ` [PATCH 1/2] can: fix assignment of error location in CAN error messages Marc Kleine-Budde
1 sibling, 0 replies; 3+ messages in thread
From: Oliver Hartkopp @ 2015-11-21 17:41 UTC (permalink / raw)
To: linux-can; +Cc: dan.carpenter, Oliver Hartkopp
The assignment 'cf->data[2] |= CAN_ERR_PROT_UNSPEC' used at CAN error message
creation time is obsolete as CAN_ERR_PROT_UNSPEC is zero and cf->data[2] is
initialized with zero in alloc_can_err_skb() anyway.
So we could either assign 'cf->data[2] = CAN_ERR_PROT_UNSPEC' correctly or we
can remove the obsolete OR operation entirely.
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
---
drivers/net/can/bfin_can.c | 2 --
drivers/net/can/c_can/c_can.c | 1 -
drivers/net/can/janz-ican3.c | 1 -
drivers/net/can/m_can/m_can.c | 1 -
drivers/net/can/rcar_can.c | 5 ++---
drivers/net/can/sja1000/sja1000.c | 1 -
drivers/net/can/sun4i_can.c | 1 -
drivers/net/can/ti_hecc.c | 1 -
drivers/net/can/usb/ems_usb.c | 1 -
drivers/net/can/usb/esd_usb2.c | 1 -
drivers/net/can/usb/usb_8dev.c | 1 -
drivers/net/can/xilinx_can.c | 4 +---
12 files changed, 3 insertions(+), 17 deletions(-)
diff --git a/drivers/net/can/bfin_can.c b/drivers/net/can/bfin_can.c
index 57dadd5..1deb8ff 100644
--- a/drivers/net/can/bfin_can.c
+++ b/drivers/net/can/bfin_can.c
@@ -501,8 +501,6 @@ static int bfin_can_err(struct net_device *dev, u16 isrc, u16 status)
cf->data[2] |= CAN_ERR_PROT_FORM;
else if (status & SER)
cf->data[2] |= CAN_ERR_PROT_STUFF;
- else
- cf->data[2] |= CAN_ERR_PROT_UNSPEC;
}
priv->can.state = state;
diff --git a/drivers/net/can/c_can/c_can.c b/drivers/net/can/c_can/c_can.c
index 7c9892ab..f91b094 100644
--- a/drivers/net/can/c_can/c_can.c
+++ b/drivers/net/can/c_can/c_can.c
@@ -962,7 +962,6 @@ static int c_can_handle_bus_err(struct net_device *dev,
* type of the last error to occur on the CAN bus
*/
cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR;
- cf->data[2] |= CAN_ERR_PROT_UNSPEC;
switch (lec_type) {
case LEC_STUFF_ERROR:
diff --git a/drivers/net/can/janz-ican3.c b/drivers/net/can/janz-ican3.c
index c1e8536..5d04f54 100644
--- a/drivers/net/can/janz-ican3.c
+++ b/drivers/net/can/janz-ican3.c
@@ -1096,7 +1096,6 @@ static int ican3_handle_cevtind(struct ican3_dev *mod, struct ican3_msg *msg)
cf->data[2] |= CAN_ERR_PROT_STUFF;
break;
default:
- cf->data[2] |= CAN_ERR_PROT_UNSPEC;
cf->data[3] = ecc & ECC_SEG;
break;
}
diff --git a/drivers/net/can/m_can/m_can.c b/drivers/net/can/m_can/m_can.c
index 9dd3ca7..39cf911 100644
--- a/drivers/net/can/m_can/m_can.c
+++ b/drivers/net/can/m_can/m_can.c
@@ -487,7 +487,6 @@ static int m_can_handle_lec_err(struct net_device *dev,
* type of the last error to occur on the CAN bus
*/
cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR;
- cf->data[2] |= CAN_ERR_PROT_UNSPEC;
switch (lec_type) {
case LEC_STUFF_ERROR:
diff --git a/drivers/net/can/rcar_can.c b/drivers/net/can/rcar_can.c
index 9161f04..bc46be3 100644
--- a/drivers/net/can/rcar_can.c
+++ b/drivers/net/can/rcar_can.c
@@ -241,10 +241,9 @@ static void rcar_can_error(struct net_device *ndev)
u8 ecsr;
netdev_dbg(priv->ndev, "Bus error interrupt:\n");
- if (skb) {
+ if (skb)
cf->can_id |= CAN_ERR_BUSERROR | CAN_ERR_PROT;
- cf->data[2] = CAN_ERR_PROT_UNSPEC;
- }
+
ecsr = readb(&priv->regs->ecsr);
if (ecsr & RCAR_CAN_ECSR_ADEF) {
netdev_dbg(priv->ndev, "ACK Delimiter Error\n");
diff --git a/drivers/net/can/sja1000/sja1000.c b/drivers/net/can/sja1000/sja1000.c
index 7b92e91..c5dbdb7 100644
--- a/drivers/net/can/sja1000/sja1000.c
+++ b/drivers/net/can/sja1000/sja1000.c
@@ -446,7 +446,6 @@ static int sja1000_err(struct net_device *dev, uint8_t isrc, uint8_t status)
cf->data[2] |= CAN_ERR_PROT_STUFF;
break;
default:
- cf->data[2] |= CAN_ERR_PROT_UNSPEC;
cf->data[3] = ecc & ECC_SEG;
break;
}
diff --git a/drivers/net/can/sun4i_can.c b/drivers/net/can/sun4i_can.c
index d9a42c6..68ef0a4 100644
--- a/drivers/net/can/sun4i_can.c
+++ b/drivers/net/can/sun4i_can.c
@@ -575,7 +575,6 @@ static int sun4i_can_err(struct net_device *dev, u8 isrc, u8 status)
cf->data[2] |= CAN_ERR_PROT_STUFF;
break;
default:
- cf->data[2] |= CAN_ERR_PROT_UNSPEC;
cf->data[3] = (ecc & SUN4I_STA_ERR_SEG_CODE)
>> 16;
break;
diff --git a/drivers/net/can/ti_hecc.c b/drivers/net/can/ti_hecc.c
index 6eab4fe..680d1ff 100644
--- a/drivers/net/can/ti_hecc.c
+++ b/drivers/net/can/ti_hecc.c
@@ -722,7 +722,6 @@ static int ti_hecc_error(struct net_device *ndev, int int_status,
if (err_status & HECC_BUS_ERROR) {
++priv->can.can_stats.bus_error;
cf->can_id |= CAN_ERR_BUSERROR | CAN_ERR_PROT;
- cf->data[2] |= CAN_ERR_PROT_UNSPEC;
if (err_status & HECC_CANES_FE) {
hecc_set_bit(priv, HECC_CANES, HECC_CANES_FE);
cf->data[2] |= CAN_ERR_PROT_FORM;
diff --git a/drivers/net/can/usb/ems_usb.c b/drivers/net/can/usb/ems_usb.c
index 2d39038..fc5b756 100644
--- a/drivers/net/can/usb/ems_usb.c
+++ b/drivers/net/can/usb/ems_usb.c
@@ -377,7 +377,6 @@ static void ems_usb_rx_err(struct ems_usb *dev, struct ems_cpc_msg *msg)
cf->data[2] |= CAN_ERR_PROT_STUFF;
break;
default:
- cf->data[2] |= CAN_ERR_PROT_UNSPEC;
cf->data[3] = ecc & SJA1000_ECC_SEG;
break;
}
diff --git a/drivers/net/can/usb/esd_usb2.c b/drivers/net/can/usb/esd_usb2.c
index 0e5a449..113e64f 100644
--- a/drivers/net/can/usb/esd_usb2.c
+++ b/drivers/net/can/usb/esd_usb2.c
@@ -282,7 +282,6 @@ static void esd_usb2_rx_event(struct esd_usb2_net_priv *priv,
cf->data[2] |= CAN_ERR_PROT_STUFF;
break;
default:
- cf->data[2] |= CAN_ERR_PROT_UNSPEC;
cf->data[3] = ecc & SJA1000_ECC_SEG;
break;
}
diff --git a/drivers/net/can/usb/usb_8dev.c b/drivers/net/can/usb/usb_8dev.c
index 017ae50..a731720 100644
--- a/drivers/net/can/usb/usb_8dev.c
+++ b/drivers/net/can/usb/usb_8dev.c
@@ -401,7 +401,6 @@ static void usb_8dev_rx_err_msg(struct usb_8dev_priv *priv,
tx_errors = 1;
break;
case USB_8DEV_STATUSMSG_CRC:
- cf->data[2] |= CAN_ERR_PROT_UNSPEC;
cf->data[3] = CAN_ERR_PROT_LOC_CRC_SEQ;
rx_errors = 1;
break;
diff --git a/drivers/net/can/xilinx_can.c b/drivers/net/can/xilinx_can.c
index 4c57ddf..51670b3 100644
--- a/drivers/net/can/xilinx_can.c
+++ b/drivers/net/can/xilinx_can.c
@@ -608,10 +608,8 @@ static void xcan_err_interrupt(struct net_device *ndev, u32 isr)
/* Check for error interrupt */
if (isr & XCAN_IXR_ERROR_MASK) {
- if (skb) {
+ if (skb)
cf->can_id |= CAN_ERR_PROT | CAN_ERR_BUSERROR;
- cf->data[2] |= CAN_ERR_PROT_UNSPEC;
- }
/* Check for Ack error interrupt */
if (err_status & XCAN_ESR_ACKER_MASK) {
--
2.1.4
^ permalink raw reply related [flat|nested] 3+ messages in thread* Re: [PATCH 1/2] can: fix assignment of error location in CAN error messages
2015-11-21 17:41 [PATCH 1/2] can: fix assignment of error location in CAN error messages Oliver Hartkopp
2015-11-21 17:41 ` [PATCH 2/2] [RFC] can: remove obsolete assignment for CAN protocol error type Oliver Hartkopp
@ 2015-11-23 8:47 ` Marc Kleine-Budde
1 sibling, 0 replies; 3+ messages in thread
From: Marc Kleine-Budde @ 2015-11-23 8:47 UTC (permalink / raw)
To: Oliver Hartkopp, linux-can; +Cc: dan.carpenter
[-- Attachment #1: Type: text/plain, Size: 900 bytes --]
On 11/21/2015 06:41 PM, Oliver Hartkopp wrote:
> As Dan Carpenter reported in http://marc.info/?l=linux-can&m=144793696016187
> the assignment of the error location in CAN error messages had some bit wise
> overlaps. Indeed the value to be assigned in data[3] is no bitfield but defines
> a single value which points to a location inside the CAN frame on the wire.
>
> This patch fixes the assignments for the error locations in error messages.
>
> Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
> Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Applied both to the can tree.
Thanks,
Marc
--
Pengutronix e.K. | Marc Kleine-Budde |
Industrial Linux Solutions | Phone: +49-231-2826-924 |
Vertretung West/Dortmund | Fax: +49-5121-206917-5555 |
Amtsgericht Hildesheim, HRA 2686 | http://www.pengutronix.de |
[-- Attachment #2: OpenPGP digital signature --]
[-- Type: application/pgp-signature, Size: 455 bytes --]
^ permalink raw reply [flat|nested] 3+ messages in thread
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