Commit 9f4928c2 authored by Fabrizio Castro's avatar Fabrizio Castro Committed by Greg Kroah-Hartman

can: rcar_can: Fix erroneous registration

[ Upstream commit 68c8d209cd4337da4fa04c672f0b62bb735969bc ]

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: 862e2b6a ("can: rcar_can: support all input clocks")
Signed-off-by: default avatarFabrizio Castro <fabrizio.castro@bp.renesas.com>
Signed-off-by: default avatarChris Paterson <Chris.Paterson2@renesas.com>
Reviewed-by: default avatarSimon Horman <horms+renesas@verge.net.au>
Signed-off-by: default avatarMarc Kleine-Budde <mkl@pengutronix.de>
Signed-off-by: default avatarSasha Levin <sashal@kernel.org>
parent 06144feb
......@@ -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;
......
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