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block/nvme: Rename local variable

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We are going to modify the code in the next commit. Renaming
the 'resp' variable to 'id' first makes the next commit easier
to review. No logical changes.

Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Reviewed-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Philippe Mathieu-Daudé <philmd@redhat.com>
Message-Id: <20200821195359.1285345-8-philmd@redhat.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
This commit is contained in:
Philippe Mathieu-Daudé 2020-08-21 21:53:51 +02:00 committed by Kevin Wolf
parent c8edbfb2cc
commit 4d98093937
1 changed files with 9 additions and 10 deletions
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19
block/nvme.c
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@ -510,8 +510,8 @@ static void nvme_identify(BlockDriverState *bs, int namespace, Error **errp)
BDRVNVMeState *s = bs->opaque;
NvmeIdCtrl *idctrl;
NvmeIdNs *idns;
uint8_t *id;
NvmeLBAF *lbaf;
uint8_t *resp;
uint16_t oncs;
int r;
uint64_t iova;
@ -520,14 +520,14 @@ static void nvme_identify(BlockDriverState *bs, int namespace, Error **errp)
.cdw10 = cpu_to_le32(0x1),
};
resp = qemu_try_blockalign0(bs, sizeof(NvmeIdCtrl));
if (!resp) {
id = qemu_try_blockalign0(bs, sizeof(NvmeIdCtrl));
if (!id) {
error_setg(errp, "Cannot allocate buffer for identify response");
goto out;
}
idctrl = (NvmeIdCtrl *)resp;
idns = (NvmeIdNs *)resp;
r = qemu_vfio_dma_map(s->vfio, resp, sizeof(NvmeIdCtrl), true, &iova);
idctrl = (NvmeIdCtrl *)id;
idns = (NvmeIdNs *)id;
r = qemu_vfio_dma_map(s->vfio, id, sizeof(NvmeIdCtrl), true, &iova);
if (r) {
error_setg(errp, "Cannot map buffer for DMA");
goto out;
@ -554,8 +554,7 @@ static void nvme_identify(BlockDriverState *bs, int namespace, Error **errp)
s->supports_write_zeroes = !!(oncs & NVME_ONCS_WRITE_ZEROES);
s->supports_discard = !!(oncs & NVME_ONCS_DSM);
memset(resp, 0, 4096);
memset(id, 0, 4096);
cmd.cdw10 = 0;
cmd.nsid = cpu_to_le32(namespace);
if (nvme_cmd_sync(bs, s->queues[INDEX_ADMIN], &cmd)) {
@ -587,8 +586,8 @@ static void nvme_identify(BlockDriverState *bs, int namespace, Error **errp)
s->blkshift = lbaf->ds;
out:
qemu_vfio_dma_unmap(s->vfio, resp);
qemu_vfree(resp);
qemu_vfio_dma_unmap(s->vfio, id);
qemu_vfree(id);
}
static bool nvme_poll_queues(BDRVNVMeState *s)