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spice-qemu-char: write to chardev whatever amount it can read 

The current code waits until the chardev can read MIN(len, VMC_MAX)
But some chardev may never reach than amount, in fact some of them
will only ever accept write of 1. Fix the min computation and remove
the VMC_MAX constant.

Signed-off-by: Gerd Hoffmann <kraxel@redhat.com>
This commit is contained in:
Marc-André Lureau 2012-12-05 16:15:32 +01:00 committed by Gerd Hoffmann
parent 938b8a36b6
commit 07a54d704e
1 changed files with 2 additions and 4 deletions
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6
spice-qemu-char.c
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@ -14,8 +14,6 @@
} \
} while (0)
#define VMC_MAX_HOST_WRITE 2048
typedef struct SpiceCharDriver {
CharDriverState* chr;
SpiceCharDeviceInstance sin;
@ -35,8 +33,8 @@ static int vmc_write(SpiceCharDeviceInstance *sin, const uint8_t *buf, int len)
uint8_t* p = (uint8_t*)buf;
while (len > 0) {
last_out = MIN(len, VMC_MAX_HOST_WRITE);
if (qemu_chr_be_can_write(scd->chr) < last_out) {
last_out = MIN(len, qemu_chr_be_can_write(scd->chr));
if (last_out <= 0) {
break;
}
qemu_chr_be_write(scd->chr, p, last_out);