From: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
To: michal.simek@xilinx.com, rajan.vaja@xilinx.com,
jolly.shah@xilinx.com, gregkh@linuxfoundation.org,
tejas.patel@xilinx.com, manish.narani@xilinx.com,
ravi.patel@xilinx.com
Cc: linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, kernel-janitors@vger.kernel.org,
Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Subject: [PATCH] firmware: xilinx: Fix an error handling path in 'zynqmp_firmware_probe()'
Date: Sun, 10 May 2020 15:03:57 +0200 [thread overview]
Message-ID: <20200510130357.233364-1-christophe.jaillet@wanadoo.fr> (raw)
If 'mfd_add_devices()' fails, we must undo 'zynqmp_pm_api_debugfs_init()'
otherwise some debugfs directory and files will be left.
Just move the call to 'zynqmp_pm_api_debugfs_init()' a few lines below to
fix the issue.
Fixes: e23d9c6d0d49 ("drivers: soc: xilinx: Add ZynqMP power domain driver")
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
---
Not related to this fix, but I think that:
- a call to 'of_platform_depopulate()' is missing in the remove function
- we shouldn't return of_platform_populate(); directly because we
don't have the opportunity to call 'mfd_remove_devices()' as done in
the remove function, and 'of_platform_depopulate()' for what have
been populated yet
I'm not familiar with this API, so I just point it out to get feedback.
---
drivers/firmware/xilinx/zynqmp.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/drivers/firmware/xilinx/zynqmp.c b/drivers/firmware/xilinx/zynqmp.c
index 8095fa84d5d7..8d1ff2454e2e 100644
--- a/drivers/firmware/xilinx/zynqmp.c
+++ b/drivers/firmware/xilinx/zynqmp.c
@@ -1235,8 +1235,6 @@ static int zynqmp_firmware_probe(struct platform_device *pdev)
pr_info("%s Trustzone version v%d.%d\n", __func__,
pm_tz_version >> 16, pm_tz_version & 0xFFFF);
- zynqmp_pm_api_debugfs_init();
-
ret = mfd_add_devices(&pdev->dev, PLATFORM_DEVID_NONE, firmware_devs,
ARRAY_SIZE(firmware_devs), NULL, 0, NULL);
if (ret) {
@@ -1244,6 +1242,8 @@ static int zynqmp_firmware_probe(struct platform_device *pdev)
return ret;
}
+ zynqmp_pm_api_debugfs_init();
+
return of_platform_populate(dev->of_node, NULL, NULL, dev);
}
--
2.25.1
next reply other threads:[~2020-05-10 13:04 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2020-05-10 13:03 Christophe JAILLET [this message]
2020-05-13 17:42 ` [PATCH] firmware: xilinx: Fix an error handling path in 'zynqmp_firmware_probe()' Jolly Shah
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