linux-kernel - [PATCH] scsi/NCR5380: Remove in

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Date:   Tue, 01 Dec 2020 17:46:36 +1100
From:   Finn Thain <fthain@...egraphics.com.au>
To:     Michael Schmitz <schmitzmic@...il.com>,
        "James E.J. Bottomley" <jejb@...ux.ibm.com>,
        "Martin K. Petersen" <martin.petersen@...cle.com>
Cc:     "Sebastian Andrzej Siewior" <bigeasy@...utronix.de>,
        "Ahmed S. Darwish" <a.darwish@...utronix.de>,
        "Thomas Gleixner" <tglx@...utronix.de>, linux-scsi@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH] scsi/NCR5380: Remove in_interrupt() test

The in_interrupt() macro is deprecated. Also, it's usage in
NCR5380_poll_politely2() has long been redundant.

Cc: Sebastian Andrzej Siewior <bigeasy@...utronix.de>
Cc: Ahmed S. Darwish <a.darwish@...utronix.de>
Cc: Thomas Gleixner <tglx@...utronix.de>
Link: https://lore.kernel.org/r/20201126132952.2287996-1-bigeasy@linutronix.de
Signed-off-by: Finn Thain <fthain@...egraphics.com.au>
---
 drivers/scsi/NCR5380.c | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/drivers/scsi/NCR5380.c b/drivers/scsi/NCR5380.c
index 462d911a89f2..6972e7ceb81a 100644
--- a/drivers/scsi/NCR5380.c
+++ b/drivers/scsi/NCR5380.c
@@ -223,7 +223,10 @@ static int NCR5380_poll_politely2(struct NCR5380_hostdata *hostdata,
 		cpu_relax();
 	} while (n--);
 
-	if (irqs_disabled() || in_interrupt())
+	/* Sleeping is not allowed when in atomic or interrupt contexts.
+	 * Callers in such contexts always disable local irqs.
+	 */
+	if (irqs_disabled())
 		return -ETIMEDOUT;
 
 	/* Repeatedly sleep for 1 ms until deadline */
-- 
2.26.2