redonkable/alistair23-linux
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stmmac: use one memset() to reset TDES01

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Use one memset() to reset all TDES01 fields instead
of one by one to reduce number of instructions.

Signed-off-by: Giuseppe Cavallaro <peppe.cavallaro@st.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Giuseppe CAVALLARO 2010-09-17 03:23:42 +00:00 committed by David S. Miller
parent c629882ac7
commit b71c7aaa1e
2 changed files with 2 additions and 17 deletions
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2
drivers/net/stmmac/enh_desc.c
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@ -284,7 +284,7 @@ static void enh_desc_release_tx_desc(struct dma_desc *p)
{
int ter = p->des01.etx.end_ring;
memset(p, 0, sizeof(struct dma_desc));
memset(p, 0, offsetof(struct dma_desc, des2));
p->des01.etx.end_ring = ter;
}

17
drivers/net/stmmac/norm_desc.c
View file

@ -174,22 +174,7 @@ static void ndesc_release_tx_desc(struct dma_desc *p)
{
int ter = p->des01.tx.end_ring;
/* clean field used within the xmit */
p->des01.tx.first_segment = 0;
p->des01.tx.last_segment = 0;
p->des01.tx.buffer1_size = 0;
/* clean status reported */
p->des01.tx.error_summary = 0;
p->des01.tx.underflow_error = 0;
p->des01.tx.no_carrier = 0;
p->des01.tx.loss_carrier = 0;
p->des01.tx.excessive_deferral = 0;
p->des01.tx.excessive_collisions = 0;
p->des01.tx.late_collision = 0;
p->des01.tx.heartbeat_fail = 0;
p->des01.tx.deferred = 0;
memset(p, 0, offsetof(struct dma_desc, des2));
/* set termination field */
p->des01.tx.end_ring = ter;
}