Wimplicit-fallthrough patches for 5.3-rc6

Hi Linus,
 
 Please, pull the following patches that mark switch cases where we are
 expecting to fall through.
 
  - Fix fall-through warnings on arm and mips for multiple
    configurations.
 
 Thanks
 
 Signed-off-by: Gustavo A. R. Silva <gustavo@embeddedor.com>
 -----BEGIN PGP SIGNATURE-----
 
 iQIzBAABCAAdFiEEkmRahXBSurMIg1YvRwW0y0cG2zEFAl1clmEACgkQRwW0y0cG
 2zGqbg/9HPC3Cf3oYq4o0/kV+cfS0ir6iJCz1mspFfbBloaS/EU7A2CF35bDz7k3
 XUzl/ci82EQCnuJv/X6ddayUF1S/vFWLnQXRznz07kJspUnNpu7JKgsZr2qsHaRe
 CfCj62J/Kuhnke8EUjuWEuga6YXYsYlcevgg/tpVXsTmxrpq2A15tWyut7WEe4JQ
 kWPELwYbPsDvTj2siZrgMRBx4gVzQKQVo5TpZiuADeJu9RuFT/64PI9TDQGE7c+X
 fFq4ijd1YPj/E+WI7k5VdUbXYiPIIXmkJ4VAPcu5VWmUS7y7bTeye0Jc3uYAxI1r
 7rykYhNzniGn3SZL+wq8rHchL3dTLBYhd34HhTlb5xdGFwmbzKgHBqdlGpH8HOo+
 CLu8kPYdmnzYCth4md0ENwgBVkj0tweyZuMzCys1qR6RFhOipxWLNGEvIXWZ0Sp8
 uNyXnPdCrZTmlwubwY4FOOLsGKW06GnD64cfmEYoCMcmT2j7clbjasWYM4PXQvbt
 0dVtt8k4M5LJBLh8qTX7RMZHDQYMiiYiMnLLAXf4wB0VUTqgNuLc4k0PpX3kBYtO
 4b0lU/LQH+8811BMNVBHK55StQ8DjM0C2yfQWx610eoohjV70JTyxOWoqeHFL5hq
 DIFdLDOgvJCqtyYgJDjmCmH9x6lgfvmxAKq66h9Z7vt25KLUizQ=
 =fQZm
 -----END PGP SIGNATURE-----

Merge tag 'Wimplicit-fallthrough-5.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux

Pull more fallthrough fixes from Gustavo A. R. Silva:
 "Fix fall-through warnings on arm and mips for multiple configurations"

* tag 'Wimplicit-fallthrough-5.3-rc6' of git://git.kernel.org/pub/scm/linux/kernel/git/gustavoars/linux:
  video: fbdev: acornfb: Mark expected switch fall-through
  scsi: libsas: sas_discover: Mark expected switch fall-through
  MIPS: Octeon: Mark expected switch fall-through
  power: supply: ab8500_charger: Mark expected switch fall-through
  watchdog: wdt285: Mark expected switch fall-through
  mtd: sa1100: Mark expected switch fall-through
  drm/sun4i: tcon: Mark expected switch fall-through
  drm/sun4i: sun6i_mipi_dsi: Mark expected switch fall-through
  ARM: riscpc: Mark expected switch fall-through
  dmaengine: fsldma: Mark expected switch fall-through

arch/arm/mach-rpc/riscpc.c

@@ -46,6 +46,7 @@ static int __init parse_tag_acorn(const struct tag *tag)
 	switch (tag->u.acorn.vram_pages) {
 	case 512:
 		vram_size += PAGE_SIZE * 256;
+		/* Fall through - ??? */
 	case 256:
 		vram_size += PAGE_SIZE * 256;
 	default:

arch/mips/include/asm/octeon/cvmx-sli-defs.h

@@ -46,6 +46,7 @@ static inline uint64_t CVMX_SLI_PCIE_MSI_RCV_FUNC(void)
 	case OCTEON_CN78XX & OCTEON_FAMILY_MASK:
 		if (OCTEON_IS_MODEL(OCTEON_CN78XX_PASS1_X))
 			return 0x0000000000003CB0ull;
+		/* Else, fall through */
 	default:
 		return 0x0000000000023CB0ull;
 	}

drivers/dma/fsldma.c

@@ -1163,6 +1163,7 @@ static int fsl_dma_chan_probe(struct fsldma_device *fdev,
 	switch (chan->feature & FSL_DMA_IP_MASK) {
 	case FSL_DMA_IP_85XX:
 		chan->toggle_ext_pause = fsl_chan_toggle_ext_pause;
+		/* Fall through */
 	case FSL_DMA_IP_83XX:
 		chan->toggle_ext_start = fsl_chan_toggle_ext_start;
 		chan->set_src_loop_size = fsl_chan_set_src_loop_size;

drivers/gpu/drm/sun4i/sun4i_tcon.c

@@ -314,6 +314,7 @@ static void sun4i_tcon0_mode_set_dithering(struct sun4i_tcon *tcon,
 		/* R and B components are only 5 bits deep */
 		val |= SUN4I_TCON0_FRM_CTL_MODE_R;
 		val |= SUN4I_TCON0_FRM_CTL_MODE_B;
+		/* Fall through */
 	case MEDIA_BUS_FMT_RGB666_1X18:
 	case MEDIA_BUS_FMT_RGB666_1X7X3_SPWG:
 		/* Fall through: enable dithering */

drivers/gpu/drm/sun4i/sun6i_mipi_dsi.c

@@ -993,6 +993,7 @@ static ssize_t sun6i_dsi_transfer(struct mipi_dsi_host *host,
 			ret = sun6i_dsi_dcs_read(dsi, msg);
 			break;
 		}
+		/* Else, fall through */
 
 	default:
 		ret = -EINVAL;

drivers/mtd/maps/sa1100-flash.c

@@ -81,6 +81,7 @@ static int sa1100_probe_subdev(struct sa_subdev_info *subdev, struct resource *r
 	default:
 		printk(KERN_WARNING "SA1100 flash: unknown base address "
 		       "0x%08lx, assuming CS0\n", phys);
+		/* Fall through */
 
 	case SA1100_CS0_PHYS:
 		subdev->map.bankwidth = (MSC0 & MSC_RBW) ? 2 : 4;

drivers/power/supply/ab8500_charger.c

@@ -742,6 +742,7 @@ static int ab8500_charger_max_usb_curr(struct ab8500_charger *di,
 						USB_CH_IP_CUR_LVL_1P5;
 			break;
 		}
+		/* Else, fall through */
 	case USB_STAT_HM_IDGND:
 		dev_err(di->dev, "USB Type - Charging not allowed\n");
 		di->max_usb_in_curr.usb_type_max = USB_CH_IP_CUR_LVL_0P05;

drivers/scsi/libsas/sas_discover.c

@@ -459,6 +459,7 @@ static void sas_discover_domain(struct work_struct *work)
 		pr_notice("ATA device seen but CONFIG_SCSI_SAS_ATA=N so cannot attach\n");
 		/* Fall through */
 #endif
+		/* Fall through - only for the #else condition above. */
 	default:
 		error = -ENXIO;
 		pr_err("unhandled device %d\n", dev->dev_type);

drivers/video/fbdev/acornfb.c

@@ -858,6 +858,7 @@ static void acornfb_parse_dram(char *opt)
 		case 'M':
 		case 'm':
 			size *= 1024;
+			/* Fall through */
 		case 'K':
 		case 'k':
 			size *= 1024;

drivers/watchdog/wdt285.c

@@ -168,7 +168,7 @@ static long watchdog_ioctl(struct file *file, unsigned int cmd,
 		soft_margin = new_margin;
 		reload = soft_margin * (mem_fclk_21285 / 256);
 		watchdog_ping();
-		/* Fall */
+		/* Fall through */
 	case WDIOC_GETTIMEOUT:
 		ret = put_user(soft_margin, int_arg);
 		break;