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mfd: reduce stack usage in mfd-core.c

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This patch moves the allocation of the resources off the stack in
mfd_add_device().

Signed-off-by: Ian Molton <spyro@f2s.com>
Signed-off-by: Samuel Ortiz <sameo@openedhand.com>
This commit is contained in:
Ian Molton 2008-07-25 22:59:29 +01:00 committed by Samuel Ortiz
parent 0cfd81031a
commit a87903f3b4
1 changed files with 11 additions and 4 deletions
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15
drivers/mfd/mfd-core.c
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@ -20,7 +20,7 @@ static int mfd_add_device(struct device *parent, int id,
struct resource *mem_base,
int irq_base)
{
struct resource res[cell->num_resources];
struct resource *res;
struct platform_device *pdev;
int ret = -ENOMEM;
int r;
@ -29,14 +29,17 @@ static int mfd_add_device(struct device *parent, int id,
if (!pdev)
goto fail_alloc;
res = kzalloc(sizeof(*res) * cell->num_resources, GFP_KERNEL);
if (!res)
goto fail_device;
pdev->dev.parent = parent;
ret = platform_device_add_data(pdev,
cell->platform_data, cell->data_size);
if (ret)
goto fail_device;
goto fail_res;
memset(res, 0, sizeof(res));
for (r = 0; r < cell->num_resources; r++) {
res[r].name = cell->resources[r].name;
res[r].flags = cell->resources[r].flags;
@ -64,11 +67,15 @@ static int mfd_add_device(struct device *parent, int id,
ret = platform_device_add(pdev);
if (ret)
goto fail_device;
goto fail_res;
kfree(res);
return 0;
/* platform_device_del(pdev); */
fail_res:
kfree(res);
fail_device:
platform_device_put(pdev);
fail_alloc: