[PATCH 5.15 055/102] iio: pressure: bmp280: Fix NULL pointer exception

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5.15-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Phil Elwell <phil@xxxxxxxxxxxxxxx>

commit 85dfb43bf69281adb1f345dfd9a39faf2e5a718d upstream.

The bmp085 EOC IRQ support is optional, but the driver's common probe
function queries the IRQ properties whether or not it exists, which
can trigger a NULL pointer exception. Avoid any exception by making
the query conditional on the possession of a valid IRQ.

Fixes: aae953949651 ("iio: pressure: bmp280: add support for BMP085 EOC interrupt")
Signed-off-by: Phil Elwell <phil@xxxxxxxxxxxxxxx>
Reviewed-by: Linus Walleij <linus.walleij@xxxxxxxxxx>
Link: https://lore.kernel.org/r/20230811155829.51208-1-phil@xxxxxxxxxxxxxxx
Signed-off-by: Jonathan Cameron <Jonathan.Cameron@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 drivers/iio/pressure/bmp280-core.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/drivers/iio/pressure/bmp280-core.c
+++ b/drivers/iio/pressure/bmp280-core.c
@@ -1112,7 +1112,7 @@ int bmp280_common_probe(struct device *d
 	 * however as it happens, the BMP085 shares the chip ID of BMP180
 	 * so we look for an IRQ if we have that.
 	 */
-	if (irq > 0 || (chip_id  == BMP180_CHIP_ID)) {
+	if (irq > 0 && (chip_id  == BMP180_CHIP_ID)) {
 		ret = bmp085_fetch_eoc_irq(dev, name, irq, data);
 		if (ret)
 			return ret;





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