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amiserial: Drop duplicate NULL check in shutdown()

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The free_page(addr), which becomes free_pages(addr, 0) checks addr
against 0. No need to repeat this check in the caller.

Acked-by: Jiri Slaby <jirislaby@kernel.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Link: https://lore.kernel.org/r/20220202165655.5647-1-andriy.shevchenko@linux.intel.com
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Andy Shevchenko 2022-02-02 18:56:55 +02:00 committed by Greg Kroah-Hartman
parent 0fc5893120
commit a5e3faf161
1 changed files with 2 additions and 4 deletions
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6
drivers/tty/amiserial.c
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@ -538,10 +538,8 @@ static void shutdown(struct tty_struct *tty, struct serial_state *info)
*/
free_irq(IRQ_AMIGA_VERTB, info);
if (info->xmit.buf) {
free_page((unsigned long) info->xmit.buf);
info->xmit.buf = NULL;
}
free_page((unsigned long)info->xmit.buf);
info->xmit.buf = NULL;
info->IER = 0;
amiga_custom.intena = IF_RBF | IF_TBE;