diff options
| author | Fabrizio Castro <fabrizio.castro@bp.renesas.com> | 2018-09-10 13:43:13 +0300 |
|---|---|---|
| committer | Marc Kleine-Budde <mkl@pengutronix.de> | 2018-11-09 19:20:08 +0300 |
| commit | 68c8d209cd4337da4fa04c672f0b62bb735969bc (patch) | |
| tree | 97bd375e9d31fa114418ac7b8e264b90286bcd77 | |
| parent | 4f145f14f6b98b5aa0dd91bdae518b3f24f74b37 (diff) | |
| download | linux-68c8d209cd4337da4fa04c672f0b62bb735969bc.tar.xz | |
can: rcar_can: Fix erroneous registration
Assigning 2 to "renesas,can-clock-select" tricks the driver into
registering the CAN interface, even though we don't want that.
This patch improves one of the checks to prevent that from happening.
Fixes: 862e2b6af9413b43 ("can: rcar_can: support all input clocks")
Signed-off-by: Fabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: Chris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
| -rw-r--r-- | drivers/net/can/rcar/rcar_can.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/net/can/rcar/rcar_can.c b/drivers/net/can/rcar/rcar_can.c index 11662f479e76..771a46083739 100644 --- a/drivers/net/can/rcar/rcar_can.c +++ b/drivers/net/can/rcar/rcar_can.c @@ -24,6 +24,9 @@ #define RCAR_CAN_DRV_NAME "rcar_can" +#define RCAR_SUPPORTED_CLOCKS (BIT(CLKR_CLKP1) | BIT(CLKR_CLKP2) | \ + BIT(CLKR_CLKEXT)) + /* Mailbox configuration: * mailbox 60 - 63 - Rx FIFO mailboxes * mailbox 56 - 59 - Tx FIFO mailboxes @@ -789,7 +792,7 @@ static int rcar_can_probe(struct platform_device *pdev) goto fail_clk; } - if (clock_select >= ARRAY_SIZE(clock_names)) { + if (!(BIT(clock_select) & RCAR_SUPPORTED_CLOCKS)) { err = -EINVAL; dev_err(&pdev->dev, "invalid CAN clock selected\n"); goto fail_clk; |