CCITMIN is a 12 bit field and doesn't fit in a u8, so extend it to u16.
This probably wasn't an issue previously because values higher than 255
never occurred.

But since commit 0f55b43dedcd ("coresight: etm: Override TRCIDR3.CCITMIN
on errata affected cpus"), a comparison with 256 was done to enable the
errata, generating the following W=1 build error:

  coresight-etm4x-core.c:1188:24: error: result of comparison of
  constant 256 with expression of type 'u8' (aka 'unsigned char') is
  always false [-Werror,-Wtautological-constant-out-of-range-compare]

   if (drvdata->ccitmin == 256)

Cc: stable@vger.kernel.org
Fixes: 54ff892b76c6 ("coresight: etm4x: splitting struct etmv4_drvdata")
Signed-off-by: James Clark <redacted>
---
 drivers/hwtracing/coresight/coresight-etm4x.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/hwtracing/coresight/coresight-etm4x.h b/drivers/hwtracing/coresight/coresight-etm4x.h
index 20e2e4cb7614..da17b6c49b0f 100644
--- a/drivers/hwtracing/coresight/coresight-etm4x.h
+++ b/drivers/hwtracing/coresight/coresight-etm4x.h

@@ -1036,7 +1036,7 @@ struct etmv4_drvdata {
        u8                              ctxid_size;
        u8                              vmid_size;
        u8                              ccsize;
-       u8                              ccitmin;
+       u16                             ccitmin;
        u8                              s_ex_level;
        u8                              ns_ex_level;
        u8                              q_support;
--

2.34.1