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    Subject[PATCH 5.4 074/102] intel_th: Fix user-visible error codes
    Date
    From: Alexander Shishkin <alexander.shishkin@linux.intel.com>

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

    ---
    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
    @@ -761,7 +761,7 @@ 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) {
    if (msc_win_set_lockout(msc->cur_win, WIN_READY, WIN_INUSE))
    @@ -1295,7 +1295,7 @@ 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) {
    @@ -1531,7 +1531,7 @@ static ssize_t intel_th_msc_read(struct
    if (ret >= 0)
    *ppos = iter->offset;
    } else {
    - ret = -ENOTSUPP;
    + ret = -EINVAL;
    }

    put_count:

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