mmc: mmc_test: add debugfs file to list all tests

Add a debugfs file "testlist" to print all available tests.

Signed-off-by: Per Forlin <per.forlin@linaro.org>
Acked-by: Kyungmin Park <kyungmin.park@samsung.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Venkatraman S <svenkatr@ti.com>
Tested-by: Sourav Poddar<sourav.poddar@ti.com>
Tested-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Chris Ball <cjb@laptop.org>

1 files changed, 38 insertions, 1 deletions

diff --git a/drivers/mmc/card/mmc_test.c b/drivers/mmc/card/mmc_test.c
index 233cdfae92f4..e8508e99aed5 100644
--- a/drivers/mmc/card/mmc_test.c
+++ b/drivers/mmc/card/mmc_test.c
@@ -2445,6 +2445,32 @@ static const struct file_operations mmc_test_fops_test = {
         .release        = single_release,
 };
 
+static int mtf_testlist_show(struct seq_file *sf, void *data)
+{
+        int i;
+
+        mutex_lock(&mmc_test_lock);
+
+        for (i = 0; i < ARRAY_SIZE(mmc_test_cases); i++)
+                seq_printf(sf, "%d:\t%s\n", i+1, mmc_test_cases[i].name);
+
+        mutex_unlock(&mmc_test_lock);
+
+        return 0;
+}
+
+static int mtf_testlist_open(struct inode *inode, struct file *file)
+{
+        return single_open(file, mtf_testlist_show, inode->i_private);
+}
+
+static const struct file_operations mmc_test_fops_testlist = {
+        .open           = mtf_testlist_open,
+        .read           = seq_read,
+        .llseek         = seq_lseek,
+        .release        = single_release,
+};
+
 static void mmc_test_free_file_test(struct mmc_card *card)
 {
         struct mmc_test_dbgfs_file *df, *dfs;
@@ -2476,7 +2502,18 @@ static int mmc_test_register_file_test(struct mmc_card *card)
 
         if (IS_ERR_OR_NULL(file)) {
                 dev_err(&card->dev,
-                        "Can't create file. Perhaps debugfs is disabled.\n");
+                        "Can't create test. Perhaps debugfs is disabled.\n");
+                ret = -ENODEV;
+                goto err;
+        }
+
+        if (card->debugfs_root)
+                file = debugfs_create_file("testlist", S_IRUGO,
+                        card->debugfs_root, card, &mmc_test_fops_testlist);
+
+        if (IS_ERR_OR_NULL(file)) {
+                dev_err(&card->dev,
+                        "Can't create testlist. Perhaps debugfs is disabled.\n");
                 ret = -ENODEV;
                 goto err;
         }