linux-kernel - [PATCH v2 2/3] usb: typec: intel_pmc_mux: Add missed error check for devm_ioremap

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Date:   Mon,  7 Jun 2021 23:50:06 +0300
From:   Andy Shevchenko <andy.shevchenko@...il.com>
To:     Heikki Krogerus <heikki.krogerus@...ux.intel.com>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        linux-usb@...r.kernel.org, linux-kernel@...r.kernel.org
Cc:     Andy Shevchenko <andy.shevchenko@...il.com>
Subject: [PATCH v2 2/3] usb: typec: intel_pmc_mux: Add missed error check for devm_ioremap_resource()

devm_ioremap_resource() can return an error, add missed check for it.

Fixes: 43d596e32276 ("usb: typec: intel_pmc_mux: Check the port status before connect")
Signed-off-by: Andy Shevchenko <andy.shevchenko@...il.com>
Reviewed-by: Heikki Krogerus <heikki.krogerus@...ux.intel.com>
---
v2: added Rb tag (Heikki)
 drivers/usb/typec/mux/intel_pmc_mux.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/drivers/usb/typec/mux/intel_pmc_mux.c b/drivers/usb/typec/mux/intel_pmc_mux.c
index 221aa1c0e77a..34e1662ad6ef 100644
--- a/drivers/usb/typec/mux/intel_pmc_mux.c
+++ b/drivers/usb/typec/mux/intel_pmc_mux.c
@@ -604,6 +604,11 @@ static int pmc_usb_probe_iom(struct pmc_usb *pmc)
 		return -ENOMEM;
 	}
 
+	if (IS_ERR(pmc->iom_base)) {
+		put_device(&adev->dev);
+		return PTR_ERR(pmc->iom_base);
+	}
+
 	pmc->iom_adev = adev;
 
 	return 0;
-- 
2.32.0