From: Biju Das <biju.das.jz@bp.renesas.com>
To: Wolfgang Grandegger <wg@grandegger.com>,
Marc Kleine-Budde <mkl@pengutronix.de>,
"David S. Miller" <davem@davemloft.net>,
Eric Dumazet <edumazet@google.com>,
Jakub Kicinski <kuba@kernel.org>, Paolo Abeni <pabeni@redhat.com>
Cc: "Biju Das" <biju.das.jz@bp.renesas.com>,
"Vincent Mailhol" <mailhol.vincent@wanadoo.fr>,
"Stefan Mätje" <stefan.maetje@esd.eu>,
"Ulrich Hecht" <uli+renesas@fpond.eu>,
"Lad Prabhakar" <prabhakar.mahadev-lad.rj@bp.renesas.com>,
"Christophe JAILLET" <christophe.jaillet@wanadoo.fr>,
linux-can@vger.kernel.org, netdev@vger.kernel.org,
"Geert Uytterhoeven" <geert+renesas@glider.be>,
"Chris Paterson" <Chris.Paterson2@renesas.com>,
"Biju Das" <biju.das@bp.renesas.com>,
linux-renesas-soc@vger.kernel.org
Subject: [PATCH v3 6/6] can: rcar_canfd: Add has_gerfl_eef to struct rcar_canfd_hw_info
Date: Thu, 27 Oct 2022 09:21:58 +0100 [thread overview]
Message-ID: <20221027082158.95895-7-biju.das.jz@bp.renesas.com> (raw)
In-Reply-To: <20221027082158.95895-1-biju.das.jz@bp.renesas.com>
R-Car has ECC error flags in global error interrupts whereas it is
not available on RZ/G2L.
Add has_gerfl_eef to struct rcar_canfd_hw_info so that rcar_canfd_
global_error() will process ECC errors only for R-Car.
whilst, this patch fixes the below checkpatch warnings
CHECK: Unnecessary parentheses around 'ch == 0'
CHECK: Unnecessary parentheses around 'ch == 1'
Signed-off-by: Biju Das <biju.das.jz@bp.renesas.com>
---
v2->v3:
* No change.
v1->v2:
* Replaced info->has_gerfl to gpriv->info->has_gerfl and wrapped
the ECC error flag check within single if statement.
---
drivers/net/can/rcar/rcar_canfd.c | 19 ++++++++++++-------
1 file changed, 12 insertions(+), 7 deletions(-)
diff --git a/drivers/net/can/rcar/rcar_canfd.c b/drivers/net/can/rcar/rcar_canfd.c
index f8eafb132b39..00242eac377d 100644
--- a/drivers/net/can/rcar/rcar_canfd.c
+++ b/drivers/net/can/rcar/rcar_canfd.c
@@ -523,6 +523,7 @@ struct rcar_canfd_hw_info {
/* hardware features */
unsigned shared_global_irqs:1; /* Has shared global irqs */
unsigned multi_channel_irqs:1; /* Has multiple channel irqs */
+ unsigned has_gerfl_eef:1; /* Has ECC Error Flag */
};
/* Channel priv data */
@@ -596,6 +597,7 @@ static const struct rcar_canfd_hw_info rcar_gen3_hw_info = {
.max_channels = 2,
.postdiv = 2,
.shared_global_irqs = 1,
+ .has_gerfl_eef = 1,
};
static const struct rcar_canfd_hw_info rzg2l_hw_info = {
@@ -608,6 +610,7 @@ static const struct rcar_canfd_hw_info r8a779a0_hw_info = {
.max_channels = 8,
.postdiv = 2,
.shared_global_irqs = 1,
+ .has_gerfl_eef = 1,
};
/* Helper functions */
@@ -955,13 +958,15 @@ 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");
- stats->tx_dropped++;
+ if (gpriv->info->has_gerfl_eef) {
+ 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");
+ stats->tx_dropped++;
+ }
}
if (gerfl & RCANFD_GERFL_MES) {
sts = rcar_canfd_read(priv->base,
--
2.25.1
next prev parent reply other threads:[~2022-10-27 8:22 UTC|newest]
Thread overview: 15+ messages / expand[flat|nested] mbox.gz Atom feed top
2022-10-27 8:21 [PATCH v3 0/6] R-Car CAN FD driver enhancements Biju Das
2022-10-27 8:21 ` [PATCH v3 1/6] can: rcar_canfd: rcar_canfd_probe: Add struct rcar_canfd_hw_info to driver data Biju Das
2022-10-27 8:21 ` [PATCH v3 2/6] can: rcar_canfd: Add max_channels to struct rcar_canfd_hw_info Biju Das
2022-10-27 8:21 ` [PATCH v3 3/6] can: rcar_canfd: Add shared_global_irqs " Biju Das
2022-10-27 8:21 ` [PATCH v3 4/6] can: rcar_canfd: Add postdiv " Biju Das
2022-10-28 9:31 ` Geert Uytterhoeven
2022-10-28 9:36 ` Biju Das
2022-10-27 8:21 ` [PATCH v3 5/6] can: rcar_canfd: Add multi_channel_irqs " Biju Das
2022-10-27 8:21 ` Biju Das [this message]
2022-10-28 10:12 ` [PATCH v3 6/6] can: rcar_canfd: Add has_gerfl_eef " Geert Uytterhoeven
2022-10-28 10:22 ` Biju Das
2022-10-28 10:24 ` Marc Kleine-Budde
2022-10-28 10:53 ` Biju Das
2022-10-31 14:57 ` Biju Das
2022-10-31 15:17 ` Marc Kleine-Budde
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