[PATCH 4.9 022/102] intel_th: Fix user-visible error codes

[Greg Kroah-Hartman]

From: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>

commit ce666be89a8a09c5924ff08fc32e119f974bdab6 upstream.

There are a few places in the driver that end up returning ENOTSUPP to
the user, replace those with EINVAL.

Signed-off-by: Alexander Shishkin <alexander.shishkin@xxxxxxxxxxxxxxx>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@xxxxxxxxxxxxxxx>
Fixes: ba82664c134ef ("intel_th: Add Memory Storage Unit driver")
Cc: stable@xxxxxxxxxxxxxxx # v4.4+
Link: https://lore.kernel.org/r/20200317062215.15598-6-alexander.shishkin@xxxxxxxxxxxxxxx
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

---
 drivers/hwtracing/intel_th/msu.c |    6 +++---
 1 file changed, 3 insertions(+), 3 deletions(-)

--- a/drivers/hwtracing/intel_th/msu.c
+++ b/drivers/hwtracing/intel_th/msu.c
@@ -497,7 +497,7 @@ static int msc_configure(struct msc *msc
 	lockdep_assert_held(&msc->buf_mutex);
 
 	if (msc->mode > MSC_MODE_MULTI)
-		return -ENOTSUPP;
+		return -EINVAL;
 
 	if (msc->mode == MSC_MODE_MULTI)
 		msc_buffer_clear_hw_header(msc);
@@ -948,7 +948,7 @@ static int msc_buffer_alloc(struct msc *
 	} else if (msc->mode == MSC_MODE_MULTI) {
 		ret = msc_buffer_multi_alloc(msc, nr_pages, nr_wins);
 	} else {
-		ret = -ENOTSUPP;
+		ret = -EINVAL;
 	}
 
 	if (!ret) {
@@ -1171,7 +1171,7 @@ static ssize_t intel_th_msc_read(struct
 		if (ret >= 0)
 			*ppos = iter->offset;
 	} else {
-		ret = -ENOTSUPP;
+		ret = -EINVAL;
 	}
 
 put_count: