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| author |   Geert Uytterhoeven <geert@linux-m68k.org> | 2013-10-29 15:47:22 +0100 |
|---|---|---|
| committer |   Lee Jones <lee.jones@linaro.org> | 2013-11-11 11:22:17 +0000 |
| commit | 0b208e41acf34c133a55a57189af30aa7924e0c6 (patch) | |
| tree | aa8f813eb55219b8a57260c9408478829e4d9ad6 /drivers/mfd | |
| parent | mfd: Stop setting refcounting pointers in original mfd_cell arrays (diff) | |
| download | linux-dev-0b208e41acf34c133a55a57189af30aa7924e0c6.tar.xz linux-dev-0b208e41acf34c133a55a57189af30aa7924e0c6.zip | |
mfd: Fix memory leak in mfd_add_devices()
If the first call to mfd_add_device() fails, no child devices have been
registered to the parent yet, and thus mfd_remove_devices() won't find
anything to remove nor free.
Hence the previously allocated array of atomic_t objects will leak.
Free the array instead of calling mfd_remove_devices() on failure during
the first loop iteration to fix this.
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Lee Jones <lee.jones@linaro.org>
Diffstat (limited to 'drivers/mfd')
| -rw-r--r-- | drivers/mfd/mfd-core.c | 12 |
1 files changed, 8 insertions, 4 deletions
diff --git a/drivers/mfd/mfd-core.c b/drivers/mfd/mfd-core.c index 8736f4539bc0..968775da638a 100644 --- a/drivers/mfd/mfd-core.c +++ b/drivers/mfd/mfd-core.c @@ -187,7 +187,7 @@ int mfd_add_devices(struct device *parent, int id, int irq_base, struct irq_domain *domain) { int i; - int ret = 0; + int ret; atomic_t *cnts; /* initialize reference counting for all cells */ @@ -200,12 +200,16 @@ int mfd_add_devices(struct device *parent, int id, ret = mfd_add_device(parent, id, cells + i, cnts + i, mem_base, irq_base, domain); if (ret) - break; + goto fail; } - if (ret) - mfd_remove_devices(parent); + return 0; +fail: + if (i) + mfd_remove_devices(parent); + else + kfree(cnts); return ret; } EXPORT_SYMBOL(mfd_add_devices); |