When introducing support for R-Car V3U, which has 8 instead of 2
channels, the ECC error bitmask was extended to take into account the
extra channels, but rcar_canfd_global_error() was not updated to act
upon the extra bits.
Replace the RCANFD_GERFL_EEF[01] macros by a new macro that takes the
channel number, fixing R-Car V3U while simplifying the code.
Fixes: 45721c406dcf50d4 ("can: rcar_canfd: Add support for r8a779a0 SoC")
Signed-off-by: Geert Uytterhoeven <geert+renesas@xxxxxxxxx>
---
Compile-tested only.
This patch conflicts with "[PATCH v3 6/6] can: rcar_canfd: Add
has_gerfl_eef to struct rcar_canfd_hw_info"[1]. Sorry for that.
[1] https://lore.kernel.org/all/20221027082158.95895-7-biju.das.jz@xxxxxxxxxxxxxx/
---
drivers/net/can/rcar/rcar_canfd.c | 13 ++++---------
1 file changed, 4 insertions(+), 9 deletions(-)
diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index 710bd0e9c3c08c02..7cca9b7507cc6805 100644
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -81,8 +81,7 @@ enum rcanfd_chip_id {
/* RSCFDnCFDGERFL / RSCFDnGERFL */
#define RCANFD_GERFL_EEF0_7 GENMASK(23, 16)
-#define RCANFD_GERFL_EEF1 BIT(17)
-#define RCANFD_GERFL_EEF0 BIT(16)
+#define RCANFD_GERFL_EEF(ch) BIT(16 + (ch))
#define RCANFD_GERFL_CMPOF BIT(3) /* CAN FD only */
#define RCANFD_GERFL_THLES BIT(2)
#define RCANFD_GERFL_MES BIT(1)
@@ -90,7 +89,7 @@ enum rcanfd_chip_id {
#define RCANFD_GERFL_ERR(gpriv, x) \
((x) & (reg_v3u(gpriv, RCANFD_GERFL_EEF0_7, \
- RCANFD_GERFL_EEF0 | RCANFD_GERFL_EEF1) | \
+ RCANFD_GERFL_EEF(0) | RCANFD_GERFL_EEF(1)) | \
RCANFD_GERFL_MES | \
((gpriv)->fdmode ? RCANFD_GERFL_CMPOF : 0)))
@@ -936,12 +935,8 @@ static void rcar_canfd_global_error(struct net_device *ndev)
u32 ridx = ch + RCANFD_RFFIFO_IDX;
gerfl = rcar_canfd_read(priv->base, RCANFD_GERFL);
- if ((gerfl & RCANFD_GERFL_EEF0) && (ch == 0)) {
- netdev_dbg(ndev, "Ch0: ECC Error flag\n");
- stats->tx_dropped++;
- }
- if ((gerfl & RCANFD_GERFL_EEF1) && (ch == 1)) {
- netdev_dbg(ndev, "Ch1: ECC Error flag\n");
+ if (gerfl & RCANFD_GERFL_EEF(ch)) {
+ netdev_dbg(ndev, "Ch%u: ECC Error flag\n", ch);
stats->tx_dropped++;
}
if (gerfl & RCANFD_GERFL_MES) {
--
2.25.1
