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drivers/block/nvme-core.c: fix build with gcc-4.4.4 

gcc-4.4.4 (and possibly other versions) fail the compile when initializers
are used with anonymous unions.  Work around this.

drivers/block/nvme-core.c: In function 'nvme_identify_ctrl':
drivers/block/nvme-core.c:1163: error: unknown field 'identify' specified in initializer
drivers/block/nvme-core.c:1163: warning: missing braces around initializer
drivers/block/nvme-core.c:1163: warning: (near initialization for 'c.<anonymous>')
drivers/block/nvme-core.c:1164: error: unknown field 'identify' specified in initializer
drivers/block/nvme-core.c:1164: warning: excess elements in struct initializer
drivers/block/nvme-core.c:1164: warning: (near initialization for 'c')
...

This patch has no effect on text size with gcc-4.8.2.

Fixes: d29ec8241c ("nvme: submit internal commands through the block layer")
Cc: Christoph Hellwig <hch@lst.de>
Cc: Jens Axboe <axboe@fb.com>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Jens Axboe <axboe@fb.com>
This commit is contained in:
Andrew Morton 2015-06-27 12:20:34 -06:00 committed by Jens Axboe
parent 6443af9855
commit e44ac588cd
1 changed files with 16 additions and 14 deletions
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30
drivers/block/nvme-core.c
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@ -1171,12 +1171,13 @@ static int adapter_delete_sq(struct nvme_dev *dev, u16 sqid)
int nvme_identify_ctrl(struct nvme_dev *dev, struct nvme_id_ctrl **id) int nvme_identify_ctrl(struct nvme_dev *dev, struct nvme_id_ctrl **id)
{ {
struct nvme_command c = { struct nvme_command c = { };
.identify.opcode = nvme_admin_identify,
.identify.cns = cpu_to_le32(1),
};
int error; int error;
/* gcc-4.4.4 (at least) has issues with initializers and anon unions */
c.identify.opcode = nvme_admin_identify;
c.identify.cns = cpu_to_le32(1);
*id = kmalloc(sizeof(struct nvme_id_ctrl), GFP_KERNEL); *id = kmalloc(sizeof(struct nvme_id_ctrl), GFP_KERNEL);
if (!*id) if (!*id)
return -ENOMEM; return -ENOMEM;
@ -1191,12 +1192,13 @@ int nvme_identify_ctrl(struct nvme_dev *dev, struct nvme_id_ctrl **id)
int nvme_identify_ns(struct nvme_dev *dev, unsigned nsid, int nvme_identify_ns(struct nvme_dev *dev, unsigned nsid,
struct nvme_id_ns **id) struct nvme_id_ns **id)
{ {
struct nvme_command c = { struct nvme_command c = { };
.identify.opcode = nvme_admin_identify,
.identify.nsid = cpu_to_le32(nsid),
};
int error; int error;
/* gcc-4.4.4 (at least) has issues with initializers and anon unions */
c.identify.opcode = nvme_admin_identify,
c.identify.nsid = cpu_to_le32(nsid),
*id = kmalloc(sizeof(struct nvme_id_ns), GFP_KERNEL); *id = kmalloc(sizeof(struct nvme_id_ns), GFP_KERNEL);
if (!*id) if (!*id)
return -ENOMEM; return -ENOMEM;
@ -1240,14 +1242,14 @@ int nvme_set_features(struct nvme_dev *dev, unsigned fid, unsigned dword11,
int nvme_get_log_page(struct nvme_dev *dev, struct nvme_smart_log **log) int nvme_get_log_page(struct nvme_dev *dev, struct nvme_smart_log **log)
{ {
struct nvme_command c = { struct nvme_command c = { };
.common.opcode = nvme_admin_get_log_page, int error;
.common.nsid = cpu_to_le32(0xFFFFFFFF),
.common.cdw10[0] = cpu_to_le32( c.common.opcode = nvme_admin_get_log_page,
c.common.nsid = cpu_to_le32(0xFFFFFFFF),
c.common.cdw10[0] = cpu_to_le32(
(((sizeof(struct nvme_smart_log) / 4) - 1) << 16) | (((sizeof(struct nvme_smart_log) / 4) - 1) << 16) |
NVME_LOG_SMART), NVME_LOG_SMART),
};
int error;
*log = kmalloc(sizeof(struct nvme_smart_log), GFP_KERNEL); *log = kmalloc(sizeof(struct nvme_smart_log), GFP_KERNEL);
if (!*log) if (!*log)