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usb: renesas_usbhs: fix signed-unsigned return 

The return type of usbhsp_setup_pipecfg() was u16 but it was returning
a negative value (-EINVAL). Lets have an additional argument which will
have pipecfg and just return the status (success or error) as the return
from the function.

Signed-off-by: Sudip Mukherjee <sudip.mukherjee@codethink.co.uk>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Sudip Mukherjee 2016-04-30 19:29:40 +01:00 committed by Greg Kroah-Hartman
parent 6fb650d43d
commit 72f595f3b5
1 changed files with 15 additions and 12 deletions
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27
drivers/usb/renesas_usbhs/pipe.c
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@ -391,9 +391,8 @@ void usbhs_pipe_set_trans_count_if_bulk(struct usbhs_pipe *pipe, int len)
/*
* pipe setup
*/
static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe,
int is_host,
int dir_in)
static int usbhsp_setup_pipecfg(struct usbhs_pipe *pipe, int is_host,
int dir_in, u16 *pipecfg)
{
u16 type = 0;
u16 bfre = 0;
@ -451,14 +450,14 @@ static u16 usbhsp_setup_pipecfg(struct usbhs_pipe *pipe,
/* EPNUM */
epnum = 0; /* see usbhs_pipe_config_update() */
return type |
bfre |
dblb |
cntmd |
dir |
shtnak |
epnum;
*pipecfg = type |
bfre |
dblb |
cntmd |
dir |
shtnak |
epnum;
return 0;
}
static u16 usbhsp_setup_pipebuff(struct usbhs_pipe *pipe)
@ -703,7 +702,11 @@ struct usbhs_pipe *usbhs_pipe_malloc(struct usbhs_priv *priv,
return NULL;
}
pipecfg = usbhsp_setup_pipecfg(pipe, is_host, dir_in);
if (usbhsp_setup_pipecfg(pipe, is_host, dir_in, &pipecfg)) {
dev_err(dev, "can't setup pipe\n");
return NULL;
}
pipebuf = usbhsp_setup_pipebuff(pipe);
usbhsp_pipe_select(pipe);