RDMA/srp: Move large values to a new enum for gcc13

[ Upstream commit 56c5dab20a6391604df9521f812c01d1e3fe1bd0 ]

Since gcc13, each member of an enum has the same type as the enum [1]. And
that is inherited from its members. Provided these two:
  SRP_TAG_NO_REQ        = ~0U,
  SRP_TAG_TSK_MGMT	= 1U << 31
all other members are unsigned ints.

Esp. with SRP_MAX_SGE and SRP_TSK_MGMT_SQ_SIZE and their use in min(),
this results in the following warnings:
  include/linux/minmax.h:20:35: error: comparison of distinct pointer types lacks a cast
  drivers/infiniband/ulp/srp/ib_srp.c:563:42: note: in expansion of macro 'min'

  include/linux/minmax.h:20:35: error: comparison of distinct pointer types lacks a cast
  drivers/infiniband/ulp/srp/ib_srp.c:2369:27: note: in expansion of macro 'min'

So move the large values away to a separate enum, so that they don't
affect other members.

[1] https://gcc.gnu.org/bugzilla/show_bug.cgi?id=36113

Link: https://lore.kernel.org/r/20221212120411.13750-1-jirislaby@kernel.org
Signed-off-by: Jiri Slaby (SUSE) <jirislaby@kernel.org>
Reviewed-by: Bart Van Assche <bvanassche@acm.org>
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Signed-off-by: Sasha Levin <sashal@kernel.org>

diff --git a/drivers/infiniband/ulp/srp/ib_srp.h b/drivers/infiniband/ulp/srp/ib_srp.h
index 00b0068..5d94db4 100644 (file)
--- a/drivers/infiniband/ulp/srp/ib_srp.h
+++ b/drivers/infiniband/ulp/srp/ib_srp.h
@@ -62,9 +62,6 @@ enum {
        SRP_DEFAULT_CMD_SQ_SIZE = SRP_DEFAULT_QUEUE_SIZE - SRP_RSP_SQ_SIZE -
                                  SRP_TSK_MGMT_SQ_SIZE,
 
-       SRP_TAG_NO_REQ          = ~0U,
-       SRP_TAG_TSK_MGMT        = 1U << 31,
-
        SRP_MAX_PAGES_PER_MR    = 512,
 
        SRP_MAX_ADD_CDB_LEN     = 16,
@@ -79,6 +76,11 @@ enum {
                                  sizeof(struct srp_imm_buf),
 };
 
+enum {
+       SRP_TAG_NO_REQ          = ~0U,
+       SRP_TAG_TSK_MGMT        = BIT(31),
+};
+
 enum srp_target_state {
        SRP_TARGET_SCANNING,
        SRP_TARGET_LIVE,