diff options
| author | Haotian Zhang <vulab@iscas.ac.cn> | 2025-10-30 14:16:03 +0800 |
|---|---|---|
| committer | Geert Uytterhoeven <geert+renesas@glider.be> | 2025-11-12 11:09:23 +0100 |
| commit | f8def051bbcf8677f64701e9699bf6d11e2780cd (patch) | |
| tree | 9f8a75c5edb9ca30fab5e98daf45a5fd884991fc /drivers | |
| parent | 7a9d0318da5d1d148021d9c9762cefecb552c54f (diff) | |
clk: renesas: r9a06g032: Fix memory leak in error path
The current code uses of_iomap() to map registers but never calls
iounmap() on any error path after the mapping. This causes a memory
leak when probe fails after successful ioremap, for example when
of_clk_add_provider() or r9a06g032_add_clk_domain() fails.
Replace of_iomap() with devm_of_iomap() to automatically unmap the
region on probe failure. Update the error check accordingly to use
IS_ERR() and PTR_ERR() since devm_of_iomap() returns ERR_PTR on error.
Fixes: 4c3d88526eba ("clk: renesas: Renesas R9A06G032 clock driver")
Signed-off-by: Haotian Zhang <vulab@iscas.ac.cn>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20251030061603.1954-1-vulab@iscas.ac.cn
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/clk/renesas/r9a06g032-clocks.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/clk/renesas/r9a06g032-clocks.c b/drivers/clk/renesas/r9a06g032-clocks.c index dcda19318b2a..0f5c91b5dfa9 100644 --- a/drivers/clk/renesas/r9a06g032-clocks.c +++ b/drivers/clk/renesas/r9a06g032-clocks.c @@ -1333,9 +1333,9 @@ static int __init r9a06g032_clocks_probe(struct platform_device *pdev) if (IS_ERR(mclk)) return PTR_ERR(mclk); - clocks->reg = of_iomap(np, 0); - if (WARN_ON(!clocks->reg)) - return -ENOMEM; + clocks->reg = devm_of_iomap(dev, np, 0, NULL); + if (IS_ERR(clocks->reg)) + return PTR_ERR(clocks->reg); r9a06g032_init_h2mode(clocks); |