diff options
Diffstat (limited to 'drivers/tty/hvc/hvc_xen.c')
| -rw-r--r-- | drivers/tty/hvc/hvc_xen.c | 23 |
1 files changed, 12 insertions, 11 deletions
diff --git a/drivers/tty/hvc/hvc_xen.c b/drivers/tty/hvc/hvc_xen.c index 34c01874f45b..0e497501f8e3 100644 --- a/drivers/tty/hvc/hvc_xen.c +++ b/drivers/tty/hvc/hvc_xen.c @@ -84,13 +84,13 @@ static inline void notify_daemon(struct xencons_info *cons) notify_remote_via_evtchn(cons->evtchn); } -static int __write_console(struct xencons_info *xencons, - const char *data, int len) +static ssize_t __write_console(struct xencons_info *xencons, + const u8 *data, size_t len) { XENCONS_RING_IDX cons, prod; struct xencons_interface *intf = xencons->intf; - int sent = 0; unsigned long flags; + size_t sent = 0; spin_lock_irqsave(&xencons->ring_lock, flags); cons = intf->out_cons; @@ -115,10 +115,11 @@ static int __write_console(struct xencons_info *xencons, return sent; } -static int domU_write_console(uint32_t vtermno, const char *data, int len) +static ssize_t domU_write_console(uint32_t vtermno, const u8 *data, size_t len) { - int ret = len; struct xencons_info *cons = vtermno_to_xencons(vtermno); + size_t ret = len; + if (cons == NULL) return -EINVAL; @@ -129,7 +130,7 @@ static int domU_write_console(uint32_t vtermno, const char *data, int len) * kernel is crippled. */ while (len) { - int sent = __write_console(cons, data, len); + ssize_t sent = __write_console(cons, data, len); if (sent < 0) return sent; @@ -144,14 +145,14 @@ static int domU_write_console(uint32_t vtermno, const char *data, int len) return ret; } -static int domU_read_console(uint32_t vtermno, char *buf, int len) +static ssize_t domU_read_console(uint32_t vtermno, u8 *buf, size_t len) { struct xencons_interface *intf; XENCONS_RING_IDX cons, prod; - int recv = 0; struct xencons_info *xencons = vtermno_to_xencons(vtermno); unsigned int eoiflag = 0; unsigned long flags; + size_t recv = 0; if (xencons == NULL) return -EINVAL; @@ -209,7 +210,7 @@ static const struct hv_ops domU_hvc_ops = { .notifier_hangup = notifier_hangup_irq, }; -static int dom0_read_console(uint32_t vtermno, char *buf, int len) +static ssize_t dom0_read_console(uint32_t vtermno, u8 *buf, size_t len) { return HYPERVISOR_console_io(CONSOLEIO_read, len, buf); } @@ -218,9 +219,9 @@ static int dom0_read_console(uint32_t vtermno, char *buf, int len) * Either for a dom0 to write to the system console, or a domU with a * debug version of Xen */ -static int dom0_write_console(uint32_t vtermno, const char *str, int len) +static ssize_t dom0_write_console(uint32_t vtermno, const u8 *str, size_t len) { - int rc = HYPERVISOR_console_io(CONSOLEIO_write, len, (char *)str); + int rc = HYPERVISOR_console_io(CONSOLEIO_write, len, (u8 *)str); if (rc < 0) return rc; |