Merge tag 'mips-fixes_7.2_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux

Pull MIPS fixes from Thomas Bogendoerfer.

* tag 'mips-fixes_7.2_1' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: configs: Enable the current Ingenic USB PHY symbol
  MIPS: loongson64: add IRQ work based on self-IPI
  MIPS: mm: Add check for highmem before removing memory block
  mips: Add build salt to the vDSO
  MIPS: DEC: Ensure RTC platform device deregistration upon failure

Author: torvalds

arch/mips/configs/cu1000-neo_defconfig

@@ -86,7 +86,7 @@ CONFIG_DMA_JZ4780=y
 # CONFIG_INGENIC_TIMER is not set
 CONFIG_INGENIC_SYSOST=y
 # CONFIG_IOMMU_SUPPORT is not set
-CONFIG_JZ4770_PHY=y
+CONFIG_PHY_INGENIC_USB=y
 CONFIG_EXT4_FS=y
 # CONFIG_DNOTIFY is not set
 CONFIG_AUTOFS_FS=y

arch/mips/configs/cu1830-neo_defconfig

@@ -89,7 +89,7 @@ CONFIG_DMA_JZ4780=y
 # CONFIG_INGENIC_TIMER is not set
 CONFIG_INGENIC_SYSOST=y
 # CONFIG_IOMMU_SUPPORT is not set
-CONFIG_JZ4770_PHY=y
+CONFIG_PHY_INGENIC_USB=y
 CONFIG_EXT4_FS=y
 # CONFIG_DNOTIFY is not set
 CONFIG_AUTOFS_FS=y

arch/mips/configs/gcw0_defconfig

@@ -99,7 +99,7 @@ CONFIG_USB_MUSB_HDRC=y
 CONFIG_USB_MUSB_GADGET=y
 CONFIG_USB_MUSB_JZ4740=y
 CONFIG_USB_INVENTRA_DMA=y
-CONFIG_JZ4770_PHY=y
+CONFIG_PHY_INGENIC_USB=y
 CONFIG_USB_GADGET=y
 CONFIG_USB_GADGET_VBUS_DRAW=500
 CONFIG_USB_ETH=y

arch/mips/dec/platform.c

@@ -38,6 +38,10 @@ static struct platform_device dec_rtc_device = {
 	.num_resources = ARRAY_SIZE(dec_rtc_resources),
 };
 
+static struct platform_device *dec_rtc_devices[] __initdata = {
+	&dec_rtc_device,
+};
+
 static struct resource dec_dz_resources[] = {
 	{ .name = "dz", .flags = IORESOURCE_MEM, },
 	{ .name = "dz", .flags = IORESOURCE_IRQ, },
@@ -137,7 +141,7 @@ static int __init dec_add_devices(void)
 	}
 	num_zs = i;
 
-	ret1 = platform_device_register(&dec_rtc_device);
+	ret1 = platform_add_devices(dec_rtc_devices, 1);
 	ret2 = IS_ENABLED(CONFIG_32BIT) ?
 	       platform_add_devices(dec_dz_devices, num_dz) : 0;
 	ret3 = platform_add_devices(dec_zs_devices, num_zs);

arch/mips/include/asm/irq_work.h

@@ -0,0 +1,9 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+
+#ifndef _ASM_MIPS_IRQ_WORK_H
+#define _ASM_MIPS_IRQ_WORK_H
+static inline bool arch_irq_work_has_interrupt(void)
+{
+	return IS_ENABLED(CONFIG_MACH_LOONGSON64) && IS_ENABLED(CONFIG_SMP);
+}
+#endif /* _ASM_MIPS_IRQ_WORK_H */

arch/mips/include/asm/smp.h

@@ -50,6 +50,8 @@ extern int __cpu_logical_map[NR_CPUS];
 #define SMP_CALL_FUNCTION	0x2
 /* Octeon - Tell another core to flush its icache */
 #define SMP_ICACHE_FLUSH	0x4
+/* Loongson64 - Self IPI for IRQ work */
+#define SMP_IRQ_WORK		0x8
 
 /* Mask of CPUs which are currently definitely operating coherently */
 extern cpumask_t cpu_coherent_mask;

arch/mips/loongson64/smp.c

@@ -381,6 +381,13 @@ loongson3_send_ipi_mask(const struct cpumask *mask, unsigned int action)
 		ipi_write_action(cpu_logical_map(i), (u32)action);
 }
 
+#ifdef CONFIG_IRQ_WORK
+void arch_irq_work_raise(void)
+{
+	loongson3_send_ipi_single(smp_processor_id(), SMP_IRQ_WORK);
+}
+#endif
+
 static irqreturn_t loongson3_ipi_interrupt(int irq, void *dev_id)
 {
 	int cpu = smp_processor_id();
@@ -397,6 +404,9 @@ static irqreturn_t loongson3_ipi_interrupt(int irq, void *dev_id)
 		irq_exit();
 	}
 
+	if (action & SMP_IRQ_WORK)
+		irq_work_run();
+
 	return IRQ_HANDLED;
 }
 

arch/mips/mm/init.c

@@ -426,10 +426,11 @@ static inline void __init highmem_init(void)
 	unsigned long tmp;
 
 	/*
-	 * If CPU cannot support HIGHMEM discard the memory above highstart_pfn
+	 * If CPU cannot support HIGHMEM discard any memory above highstart_pfn
 	 */
 	if (cpu_has_dc_aliases) {
-		memblock_remove(PFN_PHYS(highstart_pfn), -1);
+		if (highstart_pfn)
+			memblock_remove(PFN_PHYS(highstart_pfn), -1);
 		return;
 	}
 

arch/mips/vdso/elf.S

@@ -8,13 +8,16 @@
 
 #include <asm/isa-rev.h>
 
+#include <linux/build-salt.h>
 #include <linux/elfnote.h>
 #include <linux/version.h>
 
 ELFNOTE_START(Linux, 0, "a")
 	.long LINUX_VERSION_CODE
 ELFNOTE_END
 
+BUILD_SALT
+
 /*
  * The .MIPS.abiflags section must be defined with the FP ABI flags set
  * to 'any' to be able to link with both old and new libraries.