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authorSudeep Holla <sudeep.holla@arm.com>2020-10-08 22:14:51 +0300
committerJassi Brar <jaswinder.singh@linaro.org>2020-10-13 05:10:34 +0300
commitab99e237a48298c458d49b8d8bd850e1aa58e457 (patch)
tree817f0ebe6af3832d155922bb7d173d1b9e201ce2 /drivers/mailbox/arm_mhu.c
parent471de2c027422b372b1bb2578aa3123ee56b7125 (diff)
downloadlinux-ab99e237a48298c458d49b8d8bd850e1aa58e457.tar.xz
mailbox: arm_mhu: Match only if compatible is "arm,mhu"
Since we will be soon adding a separate driver based on this ARM MHU driver to support doorbell mode, let us add explicit check to match the default compatible for this driver. This is needed as the probe and match reuses the AMBA device ids currently and don't have any explicit compatible check. Signed-off-by: Sudeep Holla <sudeep.holla@arm.com> Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Diffstat (limited to 'drivers/mailbox/arm_mhu.c')
-rw-r--r--drivers/mailbox/arm_mhu.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/mailbox/arm_mhu.c b/drivers/mailbox/arm_mhu.c
index 9da236552bd7..b7fbf276eb62 100644
--- a/drivers/mailbox/arm_mhu.c
+++ b/drivers/mailbox/arm_mhu.c
@@ -113,6 +113,9 @@ static int mhu_probe(struct amba_device *adev, const struct amba_id *id)
struct device *dev = &adev->dev;
int mhu_reg[MHU_CHANS] = {MHU_LP_OFFSET, MHU_HP_OFFSET, MHU_SEC_OFFSET};
+ if (!of_device_is_compatible(dev->of_node, "arm,mhu"))
+ return -ENODEV;
+
/* Allocate memory for device */
mhu = devm_kzalloc(dev, sizeof(*mhu), GFP_KERNEL);
if (!mhu)