From 93ec4a828e6d777a61f497bc6e0cf9239fde35c7 Mon Sep 17 00:00:00 2001 From: Jag Raman Date: Fri, 9 Jun 2017 12:29:32 -0400 Subject: [PATCH] sparc64: print debug messages when reading from LDC channel Print debug messages when reading from given LDC channel. Signed-off-by: Jagannathan Raman Reviewed-by: Aaron Young Reviewed-by: Alexandre Chartre Reviewed-by: Bijan Mottahedeh Reviewed-by: Liam Merwick Signed-off-by: David S. Miller --- arch/sparc/kernel/ldc.c | 5 +++++ 1 file changed, 5 insertions(+) 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); -- 2.20.1