Re: [PATCH net-next 1/5] misdn: avoid -Wempty-body warning

On Mon, Mar 22, 2021 at 11:55 AM Leon Romanovsky [off-list ref] wrote:

On Mon, Mar 22, 2021 at 11:43:31AM +0100, Arnd Bergmann wrote:

quoted

From: Arnd Bergmann <arnd@arndb.de>

gcc warns about a pointless condition:

drivers/isdn/hardware/mISDN/hfcmulti.c: In function 'hfcmulti_interrupt':
drivers/isdn/hardware/mISDN/hfcmulti.c:2752:17: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
 2752 |                 ; /* external IRQ */

Change this as suggested by gcc, which also fits the style of the
other conditions in this function.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
---
 drivers/isdn/hardware/mISDN/hfcmulti.c | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/drivers/isdn/hardware/mISDN/hfcmulti.c b/drivers/isdn/hardware/mISDN/hfcmulti.c
index 7013a3f08429..8ab0fde758d2 100644
--- a/drivers/isdn/hardware/mISDN/hfcmulti.c
+++ b/drivers/isdn/hardware/mISDN/hfcmulti.c

@@ -2748,8 +2748,9 @@ hfcmulti_interrupt(int intno, void *dev_id)
              if (hc->ctype != HFC_TYPE_E1)
                      ph_state_irq(hc, r_irq_statech);
      }
-     if (status & V_EXT_IRQSTA)
-             ; /* external IRQ */
+     if (status & V_EXT_IRQSTA) {
+             /* external IRQ */
+     }

Any reason do not delete this hunk?

I don't care either way, I only kept it because it was apparently left there
on purpose by the original author, as seen by the comment.

        Arnd