[PATCH] [media] atmel_isi: allocate memory to store the isi platform data.
From: Josh Wu <hidden>
Date: 2012-08-29 10:46:22
Also in:
linux-media
Subsystem:
media input infrastructure (v4l/dvb), the rest · Maintainers:
Mauro Carvalho Chehab, Linus Torvalds
This patch fix the bug: ISI driver's platform data became invalid when isi platform data's attribution is __initdata. If the isi platform data is passed as __initdata. Then we need store it in driver allocated memory. otherwise when we use it out of the probe() function, then the isi platform data is invalid. Signed-off-by: Josh Wu <redacted> --- drivers/media/platform/soc_camera/atmel-isi.c | 12 +++++++++++- 1 file changed, 11 insertions(+), 1 deletion(-)
diff --git a/drivers/media/platform/soc_camera/atmel-isi.c b/drivers/media/platform/soc_camera/atmel-isi.c
index ec3f6a0..dc0fdec 100644
--- a/drivers/media/platform/soc_camera/atmel-isi.c
+++ b/drivers/media/platform/soc_camera/atmel-isi.c@@ -926,6 +926,7 @@ static int __devexit atmel_isi_remove(struct platform_device *pdev) clk_put(isi->mck); clk_unprepare(isi->pclk); clk_put(isi->pclk); + kfree(isi->pdata); kfree(isi); return 0;
@@ -968,8 +969,15 @@ static int __devinit atmel_isi_probe(struct platform_device *pdev) goto err_alloc_isi; } + isi->pdata = kzalloc(sizeof(struct isi_platform_data), GFP_KERNEL); + if (!isi->pdata) { + ret = -ENOMEM; + dev_err(&pdev->dev, "Can't allocate isi platform data!\n"); + goto err_alloc_isi_pdata; + } + memcpy(isi->pdata, pdata, sizeof(struct isi_platform_data)); + isi->pclk = pclk; - isi->pdata = pdata; isi->active = NULL; spin_lock_init(&isi->lock); init_waitqueue_head(&isi->vsync_wq);
@@ -1073,6 +1081,8 @@ err_set_mck_rate: err_clk_prepare_mck: clk_put(isi->mck); err_clk_get: + kfree(isi->pdata); +err_alloc_isi_pdata: kfree(isi); err_alloc_isi: clk_unprepare(pclk);
--
1.7.9.5