cpsw tries to flush dcache which is not in the range of cache line size. Because of this the following warning comes while flushing:
CACHE: Misaligned operation at range [dffecec0, dffed016]
Fix it by flushing cache range which is cache line size aligned.
Signed-off-by: Lokesh Vutla lokeshvutla@ti.com --- drivers/net/cpsw.c | 9 +++++++-- 1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/net/cpsw.c b/drivers/net/cpsw.c index 2ce4ec6..631544a 100644 --- a/drivers/net/cpsw.c +++ b/drivers/net/cpsw.c @@ -905,9 +905,14 @@ static int _cpsw_send(struct cpsw_priv *priv, void *packet, int length) void *buffer; int len; int timeout = CPDMA_TIMEOUT; + unsigned long pstart, pend;
- flush_dcache_range((unsigned long)packet, - (unsigned long)packet + length); + /* + * Make sure range is cache line aligned. + */ + pstart = (unsigned long)packet & ~(CONFIG_SYS_CACHELINE_SIZE - 1); + pend = ALIGN((unsigned long)packet + length, CONFIG_SYS_CACHELINE_SIZE); + flush_dcache_range(pstart, pend);
/* first reap completed packets */ while (timeout-- &&