[PATCH 5.15 157/691] fbdev: hpfb: Fix an error handling path in hpfb_dio_probe()

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5.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>

[ Upstream commit aa578e897520f32ae12bec487f2474357d01ca9c ]

If an error occurs after request_mem_region(), a corresponding
release_mem_region() should be called, as already done in the remove
function.

Fixes: 1da177e4c3f4 ("Linux-2.6.12-rc2")
Signed-off-by: Christophe JAILLET <christophe.jaillet@xxxxxxxxxx>
Signed-off-by: Helge Deller <deller@xxxxxx>
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
 drivers/video/fbdev/hpfb.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/video/fbdev/hpfb.c b/drivers/video/fbdev/hpfb.c
index 8d418abdd7678..1e9c52e2714dd 100644
--- a/drivers/video/fbdev/hpfb.c
+++ b/drivers/video/fbdev/hpfb.c
@@ -344,6 +344,7 @@ static int hpfb_dio_probe(struct dio_dev *d, const struct dio_device_id *ent)
 	if (hpfb_init_one(paddr, vaddr)) {
 		if (d->scode >= DIOII_SCBASE)
 			iounmap((void *)vaddr);
+		release_mem_region(d->resource.start, resource_size(&d->resource));
 		return -ENOMEM;
 	}
 	return 0;
-- 
2.43.0







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