arm64/signal: Use system_supports_tpidr2() to check TPIDR2

Since commit a9d6915859501("arm64/sme: Implement support
for TPIDR2"), We introduced system_supports_tpidr2() for
TPIDR2 handling. Let's use the specific check instead.

No functional changes.

Signed-off-by: Dongxu Sun <sundongxu3@huawei.com>
Reviewed-by: Mark Brown <broonie@kernel.org>
Link: https://lore.kernel.org/r/20230317124915.1263-2-sundongxu3@huawei.com
Signed-off-by: Will Deacon <will@kernel.org>

diff --git a/arch/arm64/kernel/signal.c b/arch/arm64/kernel/signal.c
index 06a02707f4882eb66c1a496ba89c618e863d564f..032e97f8cae0cf7149ae0d1976a502e3914a0c60 100644 (file)
--- a/arch/arm64/kernel/signal.c
+++ b/arch/arm64/kernel/signal.c
@@ -651,7 +651,7 @@ static int parse_user_sigframe(struct user_ctxs *user,
                        break;
 
                case TPIDR2_MAGIC:
-                       if (!system_supports_sme())
+                       if (!system_supports_tpidr2())
                                goto invalid;
 
                        if (user->tpidr2)
@@ -802,7 +802,7 @@ static int restore_sigframe(struct pt_regs *regs,
                        err = restore_fpsimd_context(&user);
        }
 
-       if (err == 0 && system_supports_sme() && user.tpidr2)
+       if (err == 0 && system_supports_tpidr2() && user.tpidr2)
                err = restore_tpidr2_context(&user);
 
        if (err == 0 && system_supports_sme() && user.za)
@@ -974,7 +974,7 @@ static int setup_sigframe(struct rt_sigframe_user_layout *user,
        }
 
        /* TPIDR2 if supported */
-       if (system_supports_sme() && err == 0) {
+       if (system_supports_tpidr2() && err == 0) {
                struct tpidr2_context __user *tpidr2_ctx =
                        apply_user_offset(user, user->tpidr2_offset);
                err |= preserve_tpidr2_context(tpidr2_ctx);