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xen/hvc: Collapse error logic. 

All of the error paths are doing the same logic. In which
case we might as well collapse them in one path.

CC: stable@kernel.org
Acked-by: Stefano Stabellini <stefano.stabellini@eu.citrix.com>
Signed-off-by: Konrad Rzeszutek Wilk <konrad.wilk@oracle.com>
hifive-unleashed-5.1
Konrad Rzeszutek Wilk 2012-05-23 12:53:11 -04:00
parent 68c2c39a76
commit 2e5ad6b9c4
1 changed files with 9 additions and 12 deletions
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21
drivers/tty/hvc/hvc_xen.c
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@ -216,22 +216,16 @@ static int xen_hvm_console_init(void)
return 0;
r = hvm_get_parameter(HVM_PARAM_CONSOLE_EVTCHN, &v);
if (r < 0) {
kfree(info);
return -ENODEV;
}
if (r < 0)
goto err;
info->evtchn = v;
hvm_get_parameter(HVM_PARAM_CONSOLE_PFN, &v);
if (r < 0) {
kfree(info);
return -ENODEV;
}
if (r < 0)
goto err;
mfn = v;
info->intf = ioremap(mfn << PAGE_SHIFT, PAGE_SIZE);
if (info->intf == NULL) {
kfree(info);
return -ENODEV;
}
if (info->intf == NULL)
goto err;
info->vtermno = HVC_COOKIE;
spin_lock(&xencons_lock);
@ -239,6 +233,9 @@ static int xen_hvm_console_init(void)
spin_unlock(&xencons_lock);
return 0;
err:
kfree(info);
return -ENODEV;
}
static int xen_pv_console_init(void)