From 9979ef7d736cb7ea5f7d1ec58c95ab9b651012e6 Mon Sep 17 00:00:00 2001 From: "stalinsrinivasan.s" Date: Fri, 20 Dec 2013 22:03:26 +0530 Subject: [PATCH] staging: dgnc: fix checkpatch.pl usage of volatile. This is a patch to the dgnc_cls.c file that fixes up volatile usage warning found by the checkpatch.pl tool Signed-off-by: S. Stalin Srinivasan Signed-off-by: Greg Kroah-Hartman --- drivers/staging/dgnc/dgnc_cls.c | 7 ++++++- 1 file changed, 6 insertions(+), 1 deletion(-) diff --git a/drivers/staging/dgnc/dgnc_cls.c b/drivers/staging/dgnc/dgnc_cls.c index 3adf404..8697698 100644 --- a/drivers/staging/dgnc/dgnc_cls.c +++ b/drivers/staging/dgnc/dgnc_cls.c @@ -1151,7 +1151,8 @@ static void cls_copy_data_from_queue_to_uart(struct channel_t *ch) static void cls_parse_modem(struct channel_t *ch, uchar signals) { - volatile uchar msignals = signals; + uchar msignals = signals; + ulong lock_flags; if (!ch || ch->magic != DGNC_CHANNEL_MAGIC) return; @@ -1163,6 +1164,7 @@ static void cls_parse_modem(struct channel_t *ch, uchar signals) * Do altpin switching. Altpin switches DCD and DSR. * This prolly breaks DSRPACE, so we should be more clever here. */ + DGNC_LOCK(ch->ch_lock, lock_flags); if (ch->ch_digi.digi_flags & DIGI_ALTPIN) { uchar mswap = signals; if (mswap & UART_MSR_DDCD) { @@ -1182,6 +1184,7 @@ static void cls_parse_modem(struct channel_t *ch, uchar signals) msignals |= UART_MSR_DCD; } } + DGNC_UNLOCK(ch->ch_lock, lock_flags); /* * Scrub off lower bits. They signify delta's, which I don't @@ -1189,6 +1192,7 @@ static void cls_parse_modem(struct channel_t *ch, uchar signals) */ signals &= 0xf0; + DGNC_LOCK(ch->ch_lock, lock_flags); if (msignals & UART_MSR_DCD) ch->ch_mistat |= UART_MSR_DCD; else @@ -1208,6 +1212,7 @@ static void cls_parse_modem(struct channel_t *ch, uchar signals) ch->ch_mistat |= UART_MSR_CTS; else ch->ch_mistat &= ~UART_MSR_CTS; + DGNC_UNLOCK(ch->ch_lock, lock_flags); DPR_MSIGS(( -- 2.7.4