crypto: crypto4xx - fix crypto4xx_build_pdr, crypto4xx_build_sdr leak

commit 5d59ad6eea82ef8df92b4109615a0dde9d8093e9 upstream.

If one of the later memory allocations in rypto4xx_build_pdr()
fails: dev->pdr (and/or) dev->pdr_uinfo wouldn't be freed.

crypto4xx_build_sdr() has the same issue with dev->sdr.

Signed-off-by: Christian Lamparter <chunkeey@googlemail.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>
Signed-off-by: Amit Pundir <amit.pundir@linaro.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/drivers/crypto/amcc/crypto4xx_core.c b/drivers/crypto/amcc/crypto4xx_core.c
index 3118cec..3f9eee7 100644 (file)
--- a/drivers/crypto/amcc/crypto4xx_core.c
+++ b/drivers/crypto/amcc/crypto4xx_core.c
@@ -207,7 +207,7 @@ static u32 crypto4xx_build_pdr(struct crypto4xx_device *dev)
                                  dev->pdr_pa);
                return -ENOMEM;
        }
-       memset(dev->pdr, 0,  sizeof(struct ce_pd) * PPC4XX_NUM_PD);
+       memset(dev->pdr, 0, sizeof(struct ce_pd) * PPC4XX_NUM_PD);
        dev->shadow_sa_pool = dma_alloc_coherent(dev->core_dev->device,
                                   256 * PPC4XX_NUM_PD,
                                   &dev->shadow_sa_pool_pa,
@@ -240,13 +240,15 @@ static u32 crypto4xx_build_pdr(struct crypto4xx_device *dev)
 
 static void crypto4xx_destroy_pdr(struct crypto4xx_device *dev)
 {
-       if (dev->pdr != NULL)
+       if (dev->pdr)
                dma_free_coherent(dev->core_dev->device,
                                  sizeof(struct ce_pd) * PPC4XX_NUM_PD,
                                  dev->pdr, dev->pdr_pa);
+
        if (dev->shadow_sa_pool)
                dma_free_coherent(dev->core_dev->device, 256 * PPC4XX_NUM_PD,
                                  dev->shadow_sa_pool, dev->shadow_sa_pool_pa);
+
        if (dev->shadow_sr_pool)
                dma_free_coherent(dev->core_dev->device,
                        sizeof(struct sa_state_record) * PPC4XX_NUM_PD,
@@ -416,12 +418,12 @@ static u32 crypto4xx_build_sdr(struct crypto4xx_device *dev)
 
 static void crypto4xx_destroy_sdr(struct crypto4xx_device *dev)
 {
-       if (dev->sdr != NULL)
+       if (dev->sdr)
                dma_free_coherent(dev->core_dev->device,
                                  sizeof(struct ce_sd) * PPC4XX_NUM_SD,
                                  dev->sdr, dev->sdr_pa);
 
-       if (dev->scatter_buffer_va != NULL)
+       if (dev->scatter_buffer_va)
                dma_free_coherent(dev->core_dev->device,
                                  dev->scatter_buffer_size * PPC4XX_NUM_SD,
                                  dev->scatter_buffer_va,
@@ -1191,7 +1193,7 @@ static int crypto4xx_probe(struct platform_device *ofdev)
 
        rc = crypto4xx_build_gdr(core_dev->dev);
        if (rc)
-               goto err_build_gdr;
+               goto err_build_pdr;
 
        rc = crypto4xx_build_sdr(core_dev->dev);
        if (rc)
@@ -1234,12 +1236,11 @@ err_iomap:
 err_request_irq:
        irq_dispose_mapping(core_dev->irq);
        tasklet_kill(&core_dev->tasklet);
-       crypto4xx_destroy_sdr(core_dev->dev);
 err_build_sdr:
+       crypto4xx_destroy_sdr(core_dev->dev);
        crypto4xx_destroy_gdr(core_dev->dev);
-err_build_gdr:
-       crypto4xx_destroy_pdr(core_dev->dev);
 err_build_pdr:
+       crypto4xx_destroy_pdr(core_dev->dev);
        kfree(core_dev->dev);
 err_alloc_dev:
        kfree(core_dev);