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drm/radeon/r100: Handle unknown family in r100_cp_init_microcode()

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With -Werror:

    In function ‘r100_cp_init_microcode’,
	inlined from ‘r100_cp_init’ at drivers/gpu/drm/radeon/r100.c:1136:7:
    include/linux/printk.h:465:44: error: ‘%s’ directive argument is null [-Werror=format-overflow=]
      465 | #define printk(fmt, ...) printk_index_wrap(_printk, fmt, ##__VA_ARGS__)
	  |                                            ^
    include/linux/printk.h:437:17: note: in definition of macro ‘printk_index_wrap’
      437 |                 _p_func(_fmt, ##__VA_ARGS__);                           \
	  |                 ^~~~~~~
    include/linux/printk.h:508:9: note: in expansion of macro ‘printk’
      508 |         printk(KERN_ERR pr_fmt(fmt), ##__VA_ARGS__)
	  |         ^~~~~~
    drivers/gpu/drm/radeon/r100.c:1062:17: note: in expansion of macro ‘pr_err’
     1062 |                 pr_err("radeon_cp: Failed to load firmware \"%s\"\n", fw_name);
	  |                 ^~~~~~

Fix this by converting the if/else if/... construct into a proper
switch() statement with a default to handle the error case.

As a bonus, the generated code is ca. 100 bytes smaller (with gcc 11.4.0
targeting arm32).

Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Geert Uytterhoeven 2024-07-30 17:58:12 +02:00 committed by Alex Deucher
parent 020620424b
commit c6dbab4632
1 changed files with 45 additions and 25 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

70
drivers/gpu/drm/radeon/r100.c
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@ -1016,45 +1016,65 @@ static int r100_cp_init_microcode(struct radeon_device *rdev)
DRM_DEBUG_KMS("\n");
if ((rdev->family == CHIP_R100) || (rdev->family == CHIP_RV100) ||
(rdev->family == CHIP_RV200) || (rdev->family == CHIP_RS100) ||
(rdev->family == CHIP_RS200)) {
switch (rdev->family) {
case CHIP_R100:
case CHIP_RV100:
case CHIP_RV200:
case CHIP_RS100:
case CHIP_RS200:
DRM_INFO("Loading R100 Microcode\n");
fw_name = FIRMWARE_R100;
} else if ((rdev->family == CHIP_R200) ||
(rdev->family == CHIP_RV250) ||
(rdev->family == CHIP_RV280) ||
(rdev->family == CHIP_RS300)) {
break;
case CHIP_R200:
case CHIP_RV250:
case CHIP_RV280:
case CHIP_RS300:
DRM_INFO("Loading R200 Microcode\n");
fw_name = FIRMWARE_R200;
} else if ((rdev->family == CHIP_R300) ||
(rdev->family == CHIP_R350) ||
(rdev->family == CHIP_RV350) ||
(rdev->family == CHIP_RV380) ||
(rdev->family == CHIP_RS400) ||
(rdev->family == CHIP_RS480)) {
break;
case CHIP_R300:
case CHIP_R350:
case CHIP_RV350:
case CHIP_RV380:
case CHIP_RS400:
case CHIP_RS480:
DRM_INFO("Loading R300 Microcode\n");
fw_name = FIRMWARE_R300;
} else if ((rdev->family == CHIP_R420) ||
(rdev->family == CHIP_R423) ||
(rdev->family == CHIP_RV410)) {
break;
case CHIP_R420:
case CHIP_R423:
case CHIP_RV410:
DRM_INFO("Loading R400 Microcode\n");
fw_name = FIRMWARE_R420;
} else if ((rdev->family == CHIP_RS690) ||
(rdev->family == CHIP_RS740)) {
break;
case CHIP_RS690:
case CHIP_RS740:
DRM_INFO("Loading RS690/RS740 Microcode\n");
fw_name = FIRMWARE_RS690;
} else if (rdev->family == CHIP_RS600) {
break;
case CHIP_RS600:
DRM_INFO("Loading RS600 Microcode\n");
fw_name = FIRMWARE_RS600;
} else if ((rdev->family == CHIP_RV515) ||
(rdev->family == CHIP_R520) ||
(rdev->family == CHIP_RV530) ||
(rdev->family == CHIP_R580) ||
(rdev->family == CHIP_RV560) ||
(rdev->family == CHIP_RV570)) {
break;
case CHIP_RV515:
case CHIP_R520:
case CHIP_RV530:
case CHIP_R580:
case CHIP_RV560:
case CHIP_RV570:
DRM_INFO("Loading R500 Microcode\n");
fw_name = FIRMWARE_R520;
break;
default:
DRM_ERROR("Unsupported Radeon family %u\n", rdev->family);
return -EINVAL;
}
err = request_firmware(&rdev->me_fw, fw_name, rdev->dev);