dma40: handle failure to allocate first LCLA

Acked-by: Per Forlin <per.forlin@stericsson.com>
Acked-by: Jonas Aaberg <jonas.aberg@stericsson.com>
Signed-off-by: Rabin Vincent <rabin.vincent@stericsson.com>
Signed-off-by: Linus Walleij <linus.walleij@stericsson.com>
Signed-off-by: Dan Williams <dan.j.williams@intel.com>

1 files changed, 5 insertions, 0 deletions

diff --git a/drivers/dma/ste_dma40.c b/drivers/dma/ste_dma40.c
index 4ec96ac1e41a..b8cce85a9558 100644
--- a/drivers/dma/ste_dma40.c
+++ b/drivers/dma/ste_dma40.c
@@ -538,6 +538,10 @@ static void d40_log_lli_to_lcxa(struct d40_chan *chan, struct d40_desc *desc)
                                curr_lcla);
 
         lli_current++;
+
+        if (curr_lcla < 0)
+                goto out;
+
         for (; lli_current < lli_len; lli_current++) {
                 unsigned int lcla_offset = chan->phy_chan->num * 1024 +
                                            8 * curr_lcla * 2;
@@ -567,6 +571,7 @@ static void d40_log_lli_to_lcxa(struct d40_chan *chan, struct d40_desc *desc)
                 }
         }
 
+out:
         desc->lli_current = lli_current;
 }