> -----Original Message----- > From: Laura Abbott [mailto:[email protected]] > Sent: Wednesday, September 30, 2015 11:42 PM > To: Rohit kumar; [email protected]; [email protected]; > [email protected]; [email protected]; > [email protected]; [email protected]; akpm@linux- > foundation.org; [email protected]; [email protected]; > [email protected]; [email protected]; [email protected]; > [email protected] > Cc: [email protected]; [email protected]; [email protected]; > [email protected]; [email protected]; [email protected]; > [email protected] > Subject: Re: [PATCH 1/1] staging: ion: Fix error handling in ion_buffer_create > > On 09/29/2015 10:37 PM, Rohit kumar wrote: > > This patch fixes error handling case when buffer->pages allocation > > fails. Also, it removes unreachable code of checking ret variable > > although it is not updated. > > > > Reviewed-by: Laura Abbott <[email protected]> > > > Signed-off-by: Rohit kumar <[email protected]> > > --- > > drivers/staging/android/ion/ion.c | 14 +++++--------- > > 1 file changed, 5 insertions(+), 9 deletions(-) > > > > diff --git a/drivers/staging/android/ion/ion.c > > b/drivers/staging/android/ion/ion.c > > index 217aa53..af59e4a 100644 > > --- a/drivers/staging/android/ion/ion.c > > +++ b/drivers/staging/android/ion/ion.c > > @@ -213,10 +213,10 @@ static struct ion_buffer *ion_buffer_create(struct > ion_heap *heap, > > "heap->ops->map_dma should return ERR_PTR on > error")) > > table = ERR_PTR(-EINVAL); > > if (IS_ERR(table)) { > > - heap->ops->free(buffer); > > - kfree(buffer); > > - return ERR_CAST(table); > > + ret = -EINVAL; > > + goto err1; > > } > > + > > buffer->sg_table = table; > > if (ion_buffer_fault_user_mappings(buffer)) { > > int num_pages = PAGE_ALIGN(buffer->size) / PAGE_SIZE; @@ - > 226,7 > > +226,7 @@ static struct ion_buffer *ion_buffer_create(struct ion_heap *heap, > > buffer->pages = vmalloc(sizeof(struct page *) * num_pages); > > if (!buffer->pages) { > > ret = -ENOMEM; > > - goto err1; > > + goto err; > > } > > > > for_each_sg(table->sgl, sg, table->nents, i) { @@ -235,9 +235,6 > @@ > > static struct ion_buffer *ion_buffer_create(struct ion_heap *heap, > > for (j = 0; j < sg->length / PAGE_SIZE; j++) > > buffer->pages[k++] = page++; > > } > > - > > - if (ret) > > - goto err; > > } > > > > buffer->dev = dev; > > @@ -261,9 +258,8 @@ static struct ion_buffer *ion_buffer_create(struct > > ion_heap *heap, > > > > err: > > heap->ops->unmap_dma(heap, buffer); > > - heap->ops->free(buffer); > > err1: > > - vfree(buffer->pages); > > + heap->ops->free(buffer); > > err2: > > kfree(buffer); > > return ERR_PTR(ret); > >
Suggested-by: Pintu Kumar <[email protected]> Reviewed-by: Pintu Kumar <[email protected]> _______________________________________________ devel mailing list [email protected] http://driverdev.linuxdriverproject.org/mailman/listinfo/driverdev-devel
