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srpt: Handle unsigned max_sge_rd in Linux 7.3

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Linux 7.3 changes ib_device_attr.max_sge_rd from int to u32, so min()
rejects its comparison with the signed local max_sge variable.

Store max_sge as u32 to match the channel's max_send_sge, and use
min_t(u32, ...) for the read limit. The explicit comparison type also
supports older kernels where max_sge_rd is signed.
This commit is contained in:
Gleb Chesnokov
2026-10-19 16:29:15 +03:00
parent 17b7b790dd
commit 29aeef4aca
1 changed files with 3 additions and 2 deletions
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srpt/src/ib_srpt.c
+3 -2
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@@ -3156,9 +3156,10 @@ static int srpt_map_sg_to_ib_sge(struct srpt_rdma_ch *ch,
u32 rsize;
u32 tsize;
u32 dma_len;
u32 max_sge;
int count;
int i, j, k;
int max_sge, nsge;
int nsge;
max_sge = ch->max_send_sge;
dir = scst_cmd_get_data_direction(cmd);
@@ -3171,7 +3172,7 @@ static int srpt_map_sg_to_ib_sge(struct srpt_rdma_ch *ch,
if (dir == SCST_DATA_WRITE) {
scst_cmd_get_write_fields(cmd, &sg, &sg_cnt);
WARN_ON(!sg);
max_sge = min(max_sge, ch->sport->sdev->dev_attr.max_sge_rd);
max_sge = min_t(u32, max_sge, ch->sport->sdev->dev_attr.max_sge_rd);
} else {
sg = scst_cmd_get_sg(cmd);
sg_cnt = scst_cmd_get_sg_cnt(cmd);