Added test for null descriptor returned from current_desc.
Also removed the diagnostic from current_desc,
and added one instead in talitos_error
to report an EU error without finding the descriptor.
Signed-off-by: Lee Nipper <lee.nip...@gmail.com>
---
drivers/crypto/talitos.c | 14 +++++++++-----
1 files changed, 9 insertions(+), 5 deletions(-)
diff --git a/drivers/crypto/talitos.c b/drivers/crypto/talitos.c
index a3918c1..d853530 100644
--- a/drivers/crypto/talitos.c
+++ b/drivers/crypto/talitos.c
@@ -401,10 +401,8 @@ static struct talitos_desc *current_desc(struct device
*dev, int ch)
while (priv->fifo[ch][tail].dma_desc != cur_desc) {
tail = (tail + 1) & (priv->fifo_len - 1);
- if (tail == priv->tail[ch]) {
- dev_err(dev, "couldn't locate current descriptor\n");
+ if (tail == priv->tail[ch])
return NULL;
- }
}
return priv->fifo[ch][tail].desc;
@@ -523,8 +521,14 @@ static void talitos_error(unsigned long data, u32 isr, u32
isr_lo)
dev_err(dev, "illegal descriptor header error\n");
if (v_lo & TALITOS_CCPSR_LO_IEU)
dev_err(dev, "invalid execution unit error\n");
- if (v_lo & TALITOS_CCPSR_LO_EU)
- report_eu_error(dev, ch, current_desc(dev, ch));
+ if (v_lo & TALITOS_CCPSR_LO_EU) {
+ struct talitos_desc *desc = current_desc(dev, ch);
+ if (desc)
+ report_eu_error(dev, ch, desc);
+ else
+ dev_err(dev,
+ "EU error, but no descriptor found.\n");
+ }
if (v_lo & TALITOS_CCPSR_LO_GB)
dev_err(dev, "gather boundary error\n");
if (v_lo & TALITOS_CCPSR_LO_GRL)
--
1.5.6.3
--
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