mailbox: zynqmp-ipi: Fix NULL vs IS_ERR() check in zynqmp_ipi_mbox_probe()
authorWei Yongjun <weiyongjun1@huawei.com>
Wed, 29 Apr 2020 09:35:03 +0000 (09:35 +0000)
committerGreg Kroah-Hartman <gregkh@linuxfoundation.org>
Wed, 24 Jun 2020 15:49:01 +0000 (17:49 +0200)
commitec3b5cb2ac1c5c656df5009d53e344eea1f7bd34
treea8700b3a451bfc78f8a70cfa21a52fa421b10211
parenta1d2e5c9f8a4a2087155cd703f255e167232dbac
mailbox: zynqmp-ipi: Fix NULL vs IS_ERR() check in zynqmp_ipi_mbox_probe()

[ Upstream commit 445aeeb569f8d7904f8cf80b7c6826bb651ef80e ]

In case of error, the function devm_ioremap() returns NULL pointer not
ERR_PTR(). So we should check whether the return value of devm_ioremap()
is NULL instead of IS_ERR.

Fixes: 4981b82ba2ff ("mailbox: ZynqMP IPI mailbox controller")
Signed-off-by: Wei Yongjun <weiyongjun1@huawei.com>
Signed-off-by: Jassi Brar <jaswinder.singh@linaro.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>
drivers/mailbox/zynqmp-ipi-mailbox.c