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sparc64: print debug messages when reading from LDC channel 

Print debug messages when reading from given LDC channel.

Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Aaron Young <aaron.young@oracle.com>
Reviewed-by: Alexandre Chartre <alexandre.chartre@oracle.com>
Reviewed-by: Bijan Mottahedeh <bijan.mottahedeh@oracle.com>
Reviewed-by: Liam Merwick <liam.merwick@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jag Raman 2017-06-09 12:29:32 -04:00 committed by David S. Miller
parent 6c95483b76
commit 93ec4a828e
1 changed files with 5 additions and 0 deletions
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5
arch/sparc/kernel/ldc.c
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@ -1950,6 +1950,8 @@ int ldc_read(struct ldc_channel *lp, void *buf, unsigned int size)
unsigned long flags;
int err;
ldcdbg(RX, "%s: entered size=%d\n", __func__, size);
if (!buf)
return -EINVAL;
@ -1965,6 +1967,9 @@ int ldc_read(struct ldc_channel *lp, void *buf, unsigned int size)
spin_unlock_irqrestore(&lp->lock, flags);
ldcdbg(RX, "%s: mode=%d, head=%lu, tail=%lu rv=%d\n", __func__,
lp->cfg.mode, lp->rx_head, lp->rx_tail, err);
return err;
}
EXPORT_SYMBOL(ldc_read);