From: Sascha Hauer <s.hauer@pengutronix.de>
To: "Eric Bénard" <eric@eukrea.com>
Cc: barebox@lists.infradead.org
Subject: Re: [PATCH] loadb: only try to change the baudrate if the driver has this feature
Date: Wed, 4 Jan 2012 17:37:56 +0100 [thread overview]
Message-ID: <20120104163755.GW5446@pengutronix.de> (raw)
In-Reply-To: <1325689276-12863-1-git-send-email-eric@eukrea.com>
On Wed, Jan 04, 2012 at 04:01:16PM +0100, Eric Bénard wrote:
> this allows loadb to work over usbserial gadget
I like the original approach better. The baudrate setting has no meaning
in hardware for the usb serial gadget. This means that we can happily
support every baudrate requested by adding a fake setbrg function.
If we had some global console_setbrg function I would agree
Jean-Christophe, this function should return cdev->setbrg or
-ENOSYS if the driver does not have a setbrg function. Still the
usb gadget serial driver should have a fake setbrg function for
the reason explained above.
>
> Signed-off-by: Eric Bénard <eric@eukrea.com>
> ---
> commands/loadb.c | 6 ++++--
> 1 files changed, 4 insertions(+), 2 deletions(-)
>
> diff --git a/commands/loadb.c b/commands/loadb.c
> index 439a83a..d60340e 100644
> --- a/commands/loadb.c
> +++ b/commands/loadb.c
> @@ -690,12 +690,13 @@ static int do_load_serial_bin(struct command *cmdtp, int argc, char *argv[])
> {
> ulong offset = 0;
> ulong addr;
> - int load_baudrate = 0, current_baudrate;
> + int load_baudrate = 0, current_baudrate = 0;
> int rcode = 0;
> int opt;
> int open_mode = O_WRONLY;
> char *output_file = NULL;
> struct console_device *cdev = NULL;
> + unsigned char baudrate[16];
>
> while ((opt = getopt(argc, argv, "f:b:o:c")) > 0) {
> switch (opt) {
> @@ -722,7 +723,8 @@ static int do_load_serial_bin(struct command *cmdtp, int argc, char *argv[])
> printf("%s:No console device with STDIN and STDOUT\n", argv[0]);
> return -ENODEV;
> }
> - current_baudrate = (int)simple_strtoul(dev_get_param(&cdev->class_dev, "baudrate"), NULL, 10);
> + if (dev_get_param(&cdev->class_dev, "baudrate") != NULL)
> + current_baudrate = (int)simple_strtoul(dev_get_param(&cdev->class_dev, "baudrate"), NULL, 10);
>
This command could be improved by doing all this baudrate stuff only
when the -b option is given. This way we default to the current
baudrate (which seems sane in the cases I can think of)
Sascha
--
Pengutronix e.K. | |
Industrial Linux Solutions | http://www.pengutronix.de/ |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0 |
Amtsgericht Hildesheim, HRA 2686 | Fax: +49-5121-206917-5555 |
_______________________________________________
barebox mailing list
barebox@lists.infradead.org
http://lists.infradead.org/mailman/listinfo/barebox
next prev parent reply other threads:[~2012-01-04 16:38 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2012-01-04 10:35 [PATCH] u_serial: add setbrg to be able to use loadb & co Eric Bénard
2012-01-04 11:45 ` Jean-Christophe PLAGNIOL-VILLARD
2012-01-04 15:01 ` [PATCH] loadb: only try to change the baudrate if the driver has this feature Eric Bénard
2012-01-04 16:37 ` Sascha Hauer [this message]
2012-01-04 17:04 ` Eric Bénard
2012-01-05 8:28 ` Sascha Hauer
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20120104163755.GW5446@pengutronix.de \
--to=s.hauer@pengutronix.de \
--cc=barebox@lists.infradead.org \
--cc=eric@eukrea.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox