crypto: hisilicon/hpre - don't use GFP_KERNEL to alloc mem during softirq

The hpre encryption driver may be used to encrypt and decrypt packets
during the rx softirq, it is not allowed to use GFP_KERNEL.

Fixes: c8b4b477079d ("crypto: hisilicon - add HiSilicon HPRE accelerator")
Signed-off-by: Zhengchao Shao <shaozhengchao@huawei.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

diff --git a/drivers/crypto/hisilicon/hpre/hpre_crypto.c b/drivers/crypto/hisilicon/hpre/hpre_crypto.c
index 97d54c1465c2b05c629133b76117ec6a1594521c..3ba6f15deafc661819c9954c2a494dac4947656e 100644 (file)
--- a/drivers/crypto/hisilicon/hpre/hpre_crypto.c
+++ b/drivers/crypto/hisilicon/hpre/hpre_crypto.c
@@ -252,7 +252,7 @@ static int hpre_prepare_dma_buf(struct hpre_asym_request *hpre_req,
        if (unlikely(shift < 0))
                return -EINVAL;
 
-       ptr = dma_alloc_coherent(dev, ctx->key_sz, tmp, GFP_KERNEL);
+       ptr = dma_alloc_coherent(dev, ctx->key_sz, tmp, GFP_ATOMIC);
        if (unlikely(!ptr))
                return -ENOMEM;