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Handle NULL bdrv.

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Signed-off-by: Paul Brook <paul@codesourcery.com>
This commit is contained in:
Paul Brook 2009-05-03 16:52:16 +01:00
parent b89e94af1d
commit 03f311edd3
1 changed files with 10 additions and 4 deletions
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14
hw/sd.c
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@ -365,7 +365,11 @@ static void sd_reset(SDState *sd, BlockDriverState *bdrv)
uint32_t size;
uint64_t sect;
bdrv_get_geometry(bdrv, &sect);
if (bdrv) {
bdrv_get_geometry(bdrv, &sect);
} else {
sect = 0;
}
sect <<= 9;
if (sect > 0x40000000)
@ -388,7 +392,7 @@ static void sd_reset(SDState *sd, BlockDriverState *bdrv)
if (sd->wp_groups)
qemu_free(sd->wp_groups);
sd->wp_switch = bdrv_is_read_only(bdrv);
sd->wp_switch = bdrv ? bdrv_is_read_only(bdrv) : 0;
sd->wp_groups = (int *) qemu_mallocz(sizeof(int) * sect);
memset(sd->function_group, 0, sizeof(int) * 6);
sd->erase_start = 0;
@ -421,7 +425,9 @@ SDState *sd_init(BlockDriverState *bs, int is_spi)
sd->spi = is_spi;
sd->enable = 1;
sd_reset(sd, bs);
bdrv_set_change_cb(sd->bdrv, sd_cardchange, sd);
if (sd->bdrv) {
bdrv_set_change_cb(sd->bdrv, sd_cardchange, sd);
}
return sd;
}
@ -1228,7 +1234,7 @@ int sd_do_command(SDState *sd, struct sd_request_s *req,
sd_rsp_type_t rtype;
int rsplen;
if (!bdrv_is_inserted(sd->bdrv) || !sd->enable) {
if (!sd->bdrv || !bdrv_is_inserted(sd->bdrv) || !sd->enable) {
return 0;
}