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can: rcar_canfd: Add missing ECC error checks for channels 2-7

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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: 45721c406d ("can: rcar_canfd: Add support for r8a779a0 SoC")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Biju Das <biju.das.jz@bp.renesas.com>
Link: https://lore.kernel.org/all/4edb2ea46cc64d0532a08a924179827481e14b4f.1666951503.git.geert+renesas@glider.be
Cc: stable@vger.kernel.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
This commit is contained in:
Geert Uytterhoeven 2022-10-28 12:06:45 +02:00 committed by Marc Kleine-Budde
parent ae64438be1
commit 8b043dfb3d
1 changed files with 4 additions and 9 deletions
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13
drivers/net/can/rcar/rcar_canfd.c
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@ -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) {