* [PATCH v1 1/1] serial: core: Drop duplicate NULL check in uart_*shutdown()
@ 2022-02-02 16:56 Andy Shevchenko
2022-02-03 8:35 ` Jiri Slaby
2022-02-04 14:29 ` Greg Kroah-Hartman
0 siblings, 2 replies; 4+ messages in thread
From: Andy Shevchenko @ 2022-02-02 16:56 UTC (permalink / raw)
To: linux-serial, linux-kernel
Cc: Greg Kroah-Hartman, Jiri Slaby, Andy Shevchenko
The free_page(addr), which becomes free_pages(addr, 0) checks addr
against 0. No need to repeat this check in the callers.
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
---
drivers/tty/serial/serial_core.c | 6 ++----
1 file changed, 2 insertions(+), 4 deletions(-)
diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
index 57f472268b6d..59f93040d807 100644
--- a/drivers/tty/serial/serial_core.c
+++ b/drivers/tty/serial/serial_core.c
@@ -328,8 +328,7 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)
state->xmit.buf = NULL;
spin_unlock_irqrestore(&uport->lock, flags);
- if (xmit_buf)
- free_page((unsigned long)xmit_buf);
+ free_page((unsigned long)xmit_buf);
}
/**
@@ -1621,8 +1620,7 @@ static void uart_tty_port_shutdown(struct tty_port *port)
state->xmit.buf = NULL;
spin_unlock_irq(&uport->lock);
- if (buf)
- free_page((unsigned long)buf);
+ free_page((unsigned long)buf);
}
static void uart_wait_until_sent(struct tty_struct *tty, int timeout)
--
2.34.1
^ permalink raw reply related [flat|nested] 4+ messages in thread
* Re: [PATCH v1 1/1] serial: core: Drop duplicate NULL check in uart_*shutdown()
2022-02-02 16:56 [PATCH v1 1/1] serial: core: Drop duplicate NULL check in uart_*shutdown() Andy Shevchenko
@ 2022-02-03 8:35 ` Jiri Slaby
2022-02-04 14:29 ` Greg Kroah-Hartman
1 sibling, 0 replies; 4+ messages in thread
From: Jiri Slaby @ 2022-02-03 8:35 UTC (permalink / raw)
To: Andy Shevchenko, linux-serial, linux-kernel; +Cc: Greg Kroah-Hartman
On 02. 02. 22, 17:56, Andy Shevchenko wrote:
> The free_page(addr), which becomes free_pages(addr, 0) checks addr
> against 0. No need to repeat this check in the callers.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Jiri Slaby <jirislaby@kernel.org>
> ---
> drivers/tty/serial/serial_core.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
> index 57f472268b6d..59f93040d807 100644
> --- a/drivers/tty/serial/serial_core.c
> +++ b/drivers/tty/serial/serial_core.c
> @@ -328,8 +328,7 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)
> state->xmit.buf = NULL;
> spin_unlock_irqrestore(&uport->lock, flags);
>
> - if (xmit_buf)
> - free_page((unsigned long)xmit_buf);
> + free_page((unsigned long)xmit_buf);
> }
>
> /**
> @@ -1621,8 +1620,7 @@ static void uart_tty_port_shutdown(struct tty_port *port)
> state->xmit.buf = NULL;
> spin_unlock_irq(&uport->lock);
>
> - if (buf)
> - free_page((unsigned long)buf);
> + free_page((unsigned long)buf);
> }
>
> static void uart_wait_until_sent(struct tty_struct *tty, int timeout)
thanks,
--
js
suse labs
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v1 1/1] serial: core: Drop duplicate NULL check in uart_*shutdown()
2022-02-02 16:56 [PATCH v1 1/1] serial: core: Drop duplicate NULL check in uart_*shutdown() Andy Shevchenko
2022-02-03 8:35 ` Jiri Slaby
@ 2022-02-04 14:29 ` Greg Kroah-Hartman
2022-02-04 15:27 ` Andy Shevchenko
1 sibling, 1 reply; 4+ messages in thread
From: Greg Kroah-Hartman @ 2022-02-04 14:29 UTC (permalink / raw)
To: Andy Shevchenko; +Cc: linux-serial, linux-kernel, Jiri Slaby
On Wed, Feb 02, 2022 at 06:56:48PM +0200, Andy Shevchenko wrote:
> The free_page(addr), which becomes free_pages(addr, 0) checks addr
> against 0. No need to repeat this check in the callers.
>
> Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
> ---
> drivers/tty/serial/serial_core.c | 6 ++----
> 1 file changed, 2 insertions(+), 4 deletions(-)
>
> diff --git a/drivers/tty/serial/serial_core.c b/drivers/tty/serial/serial_core.c
> index 57f472268b6d..59f93040d807 100644
> --- a/drivers/tty/serial/serial_core.c
> +++ b/drivers/tty/serial/serial_core.c
> @@ -328,8 +328,7 @@ static void uart_shutdown(struct tty_struct *tty, struct uart_state *state)
> state->xmit.buf = NULL;
> spin_unlock_irqrestore(&uport->lock, flags);
>
> - if (xmit_buf)
> - free_page((unsigned long)xmit_buf);
> + free_page((unsigned long)xmit_buf);
> }
>
> /**
> @@ -1621,8 +1620,7 @@ static void uart_tty_port_shutdown(struct tty_port *port)
> state->xmit.buf = NULL;
> spin_unlock_irq(&uport->lock);
>
> - if (buf)
> - free_page((unsigned long)buf);
> + free_page((unsigned long)buf);
> }
>
> static void uart_wait_until_sent(struct tty_struct *tty, int timeout)
> --
> 2.34.1
>
What branch is this against? It fails to apply to my tty-next branch :(
^ permalink raw reply [flat|nested] 4+ messages in thread
* Re: [PATCH v1 1/1] serial: core: Drop duplicate NULL check in uart_*shutdown()
2022-02-04 14:29 ` Greg Kroah-Hartman
@ 2022-02-04 15:27 ` Andy Shevchenko
0 siblings, 0 replies; 4+ messages in thread
From: Andy Shevchenko @ 2022-02-04 15:27 UTC (permalink / raw)
To: Greg Kroah-Hartman; +Cc: linux-serial, linux-kernel, Jiri Slaby
On Fri, Feb 04, 2022 at 03:29:27PM +0100, Greg Kroah-Hartman wrote:
> On Wed, Feb 02, 2022 at 06:56:48PM +0200, Andy Shevchenko wrote:
...
> What branch is this against? It fails to apply to my tty-next branch :(
Linux Next, I think/
Let me rebase on top of yours tty-next.
v2 has just been sent.
--
With Best Regards,
Andy Shevchenko
^ permalink raw reply [flat|nested] 4+ messages in thread
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2022-02-02 16:56 [PATCH v1 1/1] serial: core: Drop duplicate NULL check in uart_*shutdown() Andy Shevchenko
2022-02-03 8:35 ` Jiri Slaby
2022-02-04 14:29 ` Greg Kroah-Hartman
2022-02-04 15:27 ` Andy Shevchenko
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