[PATCH 1/3] crypto: atmel-aes/tdes/sha - return appropriate error code

[Tudor Ambarus]

Return -ENODEV when dma_request_slave_channel_compat() fails.

Signed-off-by: Tudor Ambarus <tudor.amba...@microchip.com>
---
 drivers/crypto/atmel-aes.c  | 3 +--
 drivers/crypto/atmel-sha.c  | 3 +--
 drivers/crypto/atmel-tdes.c | 3 +--
 3 files changed, 3 insertions(+), 6 deletions(-)

diff --git a/drivers/crypto/atmel-aes.c b/drivers/crypto/atmel-aes.c
index 903fd43..9659759 100644
--- a/drivers/crypto/atmel-aes.c
+++ b/drivers/crypto/atmel-aes.c
@@ -2383,7 +2383,6 @@ static int atmel_aes_dma_init(struct atmel_aes_dev *dd,
                              struct crypto_platform_data *pdata)
 {
        struct at_dma_slave *slave;
-       int err = -ENOMEM;
        dma_cap_mask_t mask;
 
        dma_cap_zero(mask);
@@ -2408,7 +2407,7 @@ static int atmel_aes_dma_init(struct atmel_aes_dev *dd,
        dma_release_channel(dd->src.chan);
 err_dma_in:
        dev_warn(dd->dev, "no DMA channel available\n");
-       return err;
+       return -ENODEV;
 }
 
 static void atmel_aes_dma_cleanup(struct atmel_aes_dev *dd)
diff --git a/drivers/crypto/atmel-sha.c b/drivers/crypto/atmel-sha.c
index 3e2f41b..42c1f74 100644
--- a/drivers/crypto/atmel-sha.c
+++ b/drivers/crypto/atmel-sha.c
@@ -2628,7 +2628,6 @@ static bool atmel_sha_filter(struct dma_chan *chan, void 
*slave)
 static int atmel_sha_dma_init(struct atmel_sha_dev *dd,
                                struct crypto_platform_data *pdata)
 {
-       int err = -ENOMEM;
        dma_cap_mask_t mask_in;
 
        /* Try to grab DMA channel */
@@ -2639,7 +2638,7 @@ static int atmel_sha_dma_init(struct atmel_sha_dev *dd,
                        atmel_sha_filter, &pdata->dma_slave->rxdata, dd->dev, 
"tx");
        if (!dd->dma_lch_in.chan) {
                dev_warn(dd->dev, "no DMA channel available\n");
-               return err;
+               return -ENODEV;
        }
 
        dd->dma_lch_in.dma_conf.direction = DMA_MEM_TO_DEV;
diff --git a/drivers/crypto/atmel-tdes.c b/drivers/crypto/atmel-tdes.c
index f4b335d..0ece4b8 100644
--- a/drivers/crypto/atmel-tdes.c
+++ b/drivers/crypto/atmel-tdes.c
@@ -720,7 +720,6 @@ static bool atmel_tdes_filter(struct dma_chan *chan, void 
*slave)
 static int atmel_tdes_dma_init(struct atmel_tdes_dev *dd,
                        struct crypto_platform_data *pdata)
 {
-       int err = -ENOMEM;
        dma_cap_mask_t mask;
 
        dma_cap_zero(mask);
@@ -765,7 +764,7 @@ static int atmel_tdes_dma_init(struct atmel_tdes_dev *dd,
        dma_release_channel(dd->dma_lch_in.chan);
 err_dma_in:
        dev_warn(dd->dev, "no DMA channel available\n");
-       return err;
+       return -ENODEV;
 }
 
 static void atmel_tdes_dma_cleanup(struct atmel_tdes_dev *dd)
-- 
2.9.4