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| author | Jag Raman <jag.raman@oracle.com> | 2017-06-09 12:29:32 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-06-10 14:10:55 -0700 |
| commit | 93ec4a828e6d777a61f497bc6e0cf9239fde35c7 (patch) | |
| tree | f195fabfa9406d05f8578b0532136e14311bedc3 | |
| parent | 6c95483b768c62f8ee933ae08a1bdbcb78b5410f (diff) | |
| download | lwn-93ec4a828e6d777a61f497bc6e0cf9239fde35c7.tar.gz lwn-93ec4a828e6d777a61f497bc6e0cf9239fde35c7.zip | |
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>
| -rw-r--r-- | arch/sparc/kernel/ldc.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/arch/sparc/kernel/ldc.c b/arch/sparc/kernel/ldc.c index 47817b78ebfc..97a5743b04e2 100644 --- a/arch/sparc/kernel/ldc.c +++ b/arch/sparc/kernel/ldc.c @@ -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); |