powerpc/msi: Use WARN_ON() in msi bitmap selftests

As demonstrated in the previous commit, the failure message from the msi
bitmap selftests is a bit subtle, it's easy to miss a failure in a busy
boot log.

So drop our check() macro and use WARN_ON() instead. This necessitates
inverting all the conditions as well.

Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>

diff --git a/arch/powerpc/sysdev/msi_bitmap.c b/arch/powerpc/sysdev/msi_bitmap.c
index 8155d93..73b64c7 100644 (file)
--- a/arch/powerpc/sysdev/msi_bitmap.c
+++ b/arch/powerpc/sysdev/msi_bitmap.c
@@ -145,69 +145,64 @@ void msi_bitmap_free(struct msi_bitmap *bmp)
 
 #ifdef CONFIG_MSI_BITMAP_SELFTEST
 
-#define check(x)       \
-       if (!(x)) printk("msi_bitmap: test failed at line %d\n", __LINE__);
-
 static void __init test_basics(void)
 {
        struct msi_bitmap bmp;
        int rc, i, size = 512;
 
        /* Can't allocate a bitmap of 0 irqs */
-       check(msi_bitmap_alloc(&bmp, 0, NULL) != 0);
+       WARN_ON(msi_bitmap_alloc(&bmp, 0, NULL) == 0);
 
        /* of_node may be NULL */
-       check(0 == msi_bitmap_alloc(&bmp, size, NULL));
+       WARN_ON(msi_bitmap_alloc(&bmp, size, NULL));
 
        /* Should all be free by default */
-       check(0 == bitmap_find_free_region(bmp.bitmap, size,
-                                          get_count_order(size)));
+       WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
        bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
 
        /* With no node, there's no msi-available-ranges, so expect > 0 */
-       check(msi_bitmap_reserve_dt_hwirqs(&bmp) > 0);
+       WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0);
 
        /* Should all still be free */
-       check(0 == bitmap_find_free_region(bmp.bitmap, size,
-                                          get_count_order(size)));
+       WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
        bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
 
        /* Check we can fill it up and then no more */
        for (i = 0; i < size; i++)
-               check(msi_bitmap_alloc_hwirqs(&bmp, 1) >= 0);
+               WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) < 0);
 
-       check(msi_bitmap_alloc_hwirqs(&bmp, 1) < 0);
+       WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) >= 0);
 
        /* Should all be allocated */
-       check(bitmap_find_free_region(bmp.bitmap, size, 0) < 0);
+       WARN_ON(bitmap_find_free_region(bmp.bitmap, size, 0) >= 0);
 
        /* And if we free one we can then allocate another */
        msi_bitmap_free_hwirqs(&bmp, size / 2, 1);
-       check(msi_bitmap_alloc_hwirqs(&bmp, 1) == size / 2);
+       WARN_ON(msi_bitmap_alloc_hwirqs(&bmp, 1) != size / 2);
 
        /* Free most of them for the alignment tests */
        msi_bitmap_free_hwirqs(&bmp, 3, size - 3);
 
        /* Check we get a naturally aligned offset */
        rc = msi_bitmap_alloc_hwirqs(&bmp, 2);
-       check(rc >= 0 && rc % 2 == 0);
+       WARN_ON(rc < 0 && rc % 2 != 0);
        rc = msi_bitmap_alloc_hwirqs(&bmp, 4);
-       check(rc >= 0 && rc % 4 == 0);
+       WARN_ON(rc < 0 && rc % 4 != 0);
        rc = msi_bitmap_alloc_hwirqs(&bmp, 8);
-       check(rc >= 0 && rc % 8 == 0);
+       WARN_ON(rc < 0 && rc % 8 != 0);
        rc = msi_bitmap_alloc_hwirqs(&bmp, 9);
-       check(rc >= 0 && rc % 16 == 0);
+       WARN_ON(rc < 0 && rc % 16 != 0);
        rc = msi_bitmap_alloc_hwirqs(&bmp, 3);
-       check(rc >= 0 && rc % 4 == 0);
+       WARN_ON(rc < 0 && rc % 4 != 0);
        rc = msi_bitmap_alloc_hwirqs(&bmp, 7);
-       check(rc >= 0 && rc % 8 == 0);
+       WARN_ON(rc < 0 && rc % 8 != 0);
        rc = msi_bitmap_alloc_hwirqs(&bmp, 121);
-       check(rc >= 0 && rc % 128 == 0);
+       WARN_ON(rc < 0 && rc % 128 != 0);
 
        msi_bitmap_free(&bmp);
 
-       /* Clients may check bitmap == NULL for "not-allocated" */
-       check(bmp.bitmap == NULL);
+       /* Clients may WARN_ON bitmap == NULL for "not-allocated" */
+       WARN_ON(bmp.bitmap != NULL);
 
        kfree(bmp.bitmap);
 }
@@ -229,14 +224,13 @@ static void __init test_of_node(void)
        of_node_init(&of_node);
        of_node.full_name = node_name;
 
-       check(0 == msi_bitmap_alloc(&bmp, size, &of_node));
+       WARN_ON(msi_bitmap_alloc(&bmp, size, &of_node));
 
        /* No msi-available-ranges, so expect > 0 */
-       check(msi_bitmap_reserve_dt_hwirqs(&bmp) > 0);
+       WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp) <= 0);
 
        /* Should all still be free */
-       check(0 == bitmap_find_free_region(bmp.bitmap, size,
-                                          get_count_order(size)));
+       WARN_ON(bitmap_find_free_region(bmp.bitmap, size, get_count_order(size)));
        bitmap_release_region(bmp.bitmap, 0, get_count_order(size));
 
        /* Now create a fake msi-available-ranges property */
@@ -250,11 +244,11 @@ static void __init test_of_node(void)
        of_node.properties = &prop;
 
        /* msi-available-ranges, so expect == 0 */
-       check(msi_bitmap_reserve_dt_hwirqs(&bmp) == 0);
+       WARN_ON(msi_bitmap_reserve_dt_hwirqs(&bmp));
 
        /* Check we got the expected result */
-       check(0 == bitmap_parselist(expected_str, expected, size));
-       check(bitmap_equal(expected, bmp.bitmap, size));
+       WARN_ON(bitmap_parselist(expected_str, expected, size));
+       WARN_ON(!bitmap_equal(expected, bmp.bitmap, size));
 
        msi_bitmap_free(&bmp);
        kfree(bmp.bitmap);