regmap-irq: Consistently use memset32() in regmap_irq_thread()

JIRA: https://issues.redhat.com/browse/RHEL-81536

commit 21e9a1d
Author: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Date: Mon, 30 Sep 2024 01:11:09 +0000

The commit 4d60cac ("regmap-irq: Add no_status support") adds
an additional branch into IRQ thread handler in regmap. It wisely
chose to use memset32() as it might be optimised on some architectures
and hence give a performance benefit. At the same time the old code
continue using simple memset(). Update the old code to use memset32().

Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://patch.msgid.link/20240925082726.620622-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Mark Brown <broonie@kernel.org>
Signed-off-by: Mark Langsdorf <mlangsdo@redhat.com>

Author: mlangsdorf

drivers/base/regmap/regmap-irq.c

@@ -364,14 +364,11 @@ static irqreturn_t regmap_irq_thread(int irq, void *d)
 		memset32(data->status_buf, GENMASK(31, 0), chip->num_regs);
 	} else if (chip->num_main_regs) {
 		unsigned int max_main_bits;
-		unsigned long size;
-
-		size = chip->num_regs * sizeof(unsigned int);
 
 		max_main_bits = (chip->num_main_status_bits) ?
 				 chip->num_main_status_bits : chip->num_regs;
 		/* Clear the status buf as we don't read all status regs */
-		memset(data->status_buf, 0, size);
+		memset32(data->status_buf, 0, chip->num_regs);
 
 		/* We could support bulk read for main status registers
 		 * but I don't expect to see devices with really many main