Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha
Pull alpha updates from Matt Turner:
"A few changes for alpha. They're mostly small janitorial fixes but
there's also a build fix and most notably a patch from Mikulas that
fixes a hang on boot on the Avanti platform, which required quite a
bit of work and review"
* 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mattst88/alpha:
alpha: Fix build around srm_sysrq_reboot_op
alpha: c_next should increase position index
alpha: Replace sg++ with sg = sg_next(sg)
alpha: fix memory barriers so that they conform to the specification
alpha: remove unneeded semicolon in sys_eiger.c
alpha: remove unneeded semicolon in osf_sys.c
alpha: Replace strncmp with str_has_prefix
alpha: fix rtc port ranges
alpha: Kconfig: pedantic formatting
diff --git a/arch/alpha/Kconfig b/arch/alpha/Kconfig
index ef17903..48f6e22 100644
--- a/arch/alpha/Kconfig
+++ b/arch/alpha/Kconfig
@@ -545,7 +545,7 @@
default "4" if !ALPHA_GENERIC && !ALPHA_MARVEL
help
MARVEL support can handle a maximum of 32 CPUs, all the others
- with working support have a maximum of 4 CPUs.
+ with working support have a maximum of 4 CPUs.
config ARCH_DISCONTIGMEM_ENABLE
bool "Discontiguous Memory Support"
@@ -657,7 +657,7 @@
endchoice
config HZ
- int
+ int
default 32 if HZ_32
default 64 if HZ_64
default 128 if HZ_128
diff --git a/arch/alpha/boot/tools/objstrip.c b/arch/alpha/boot/tools/objstrip.c
index 825a16f..08b430d2 100644
--- a/arch/alpha/boot/tools/objstrip.c
+++ b/arch/alpha/boot/tools/objstrip.c
@@ -148,7 +148,7 @@
#ifdef __ELF__
elf = (struct elfhdr *) buf;
- if (elf->e_ident[0] == 0x7f && strncmp((char *)elf->e_ident + 1, "ELF", 3) == 0) {
+ if (elf->e_ident[0] == 0x7f && str_has_prefix((char *)elf->e_ident + 1, "ELF")) {
if (elf->e_type != ET_EXEC) {
fprintf(stderr, "%s: %s is not an ELF executable\n",
prog_name, inname);
diff --git a/arch/alpha/include/asm/io.h b/arch/alpha/include/asm/io.h
index 13bea46..a4d0c19 100644
--- a/arch/alpha/include/asm/io.h
+++ b/arch/alpha/include/asm/io.h
@@ -309,14 +309,18 @@
#if IO_CONCAT(__IO_PREFIX,trivial_io_bw)
extern inline unsigned int ioread8(void __iomem *addr)
{
- unsigned int ret = IO_CONCAT(__IO_PREFIX,ioread8)(addr);
+ unsigned int ret;
+ mb();
+ ret = IO_CONCAT(__IO_PREFIX,ioread8)(addr);
mb();
return ret;
}
extern inline unsigned int ioread16(void __iomem *addr)
{
- unsigned int ret = IO_CONCAT(__IO_PREFIX,ioread16)(addr);
+ unsigned int ret;
+ mb();
+ ret = IO_CONCAT(__IO_PREFIX,ioread16)(addr);
mb();
return ret;
}
@@ -357,7 +361,9 @@
#if IO_CONCAT(__IO_PREFIX,trivial_io_lq)
extern inline unsigned int ioread32(void __iomem *addr)
{
- unsigned int ret = IO_CONCAT(__IO_PREFIX,ioread32)(addr);
+ unsigned int ret;
+ mb();
+ ret = IO_CONCAT(__IO_PREFIX,ioread32)(addr);
mb();
return ret;
}
@@ -402,14 +408,18 @@
extern inline u8 readb(const volatile void __iomem *addr)
{
- u8 ret = __raw_readb(addr);
+ u8 ret;
+ mb();
+ ret = __raw_readb(addr);
mb();
return ret;
}
extern inline u16 readw(const volatile void __iomem *addr)
{
- u16 ret = __raw_readw(addr);
+ u16 ret;
+ mb();
+ ret = __raw_readw(addr);
mb();
return ret;
}
@@ -450,14 +460,18 @@
extern inline u32 readl(const volatile void __iomem *addr)
{
- u32 ret = __raw_readl(addr);
+ u32 ret;
+ mb();
+ ret = __raw_readl(addr);
mb();
return ret;
}
extern inline u64 readq(const volatile void __iomem *addr)
{
- u64 ret = __raw_readq(addr);
+ u64 ret;
+ mb();
+ ret = __raw_readq(addr);
mb();
return ret;
}
@@ -486,14 +500,44 @@
#define outb_p outb
#define outw_p outw
#define outl_p outl
-#define readb_relaxed(addr) __raw_readb(addr)
-#define readw_relaxed(addr) __raw_readw(addr)
-#define readl_relaxed(addr) __raw_readl(addr)
-#define readq_relaxed(addr) __raw_readq(addr)
-#define writeb_relaxed(b, addr) __raw_writeb(b, addr)
-#define writew_relaxed(b, addr) __raw_writew(b, addr)
-#define writel_relaxed(b, addr) __raw_writel(b, addr)
-#define writeq_relaxed(b, addr) __raw_writeq(b, addr)
+
+extern u8 readb_relaxed(const volatile void __iomem *addr);
+extern u16 readw_relaxed(const volatile void __iomem *addr);
+extern u32 readl_relaxed(const volatile void __iomem *addr);
+extern u64 readq_relaxed(const volatile void __iomem *addr);
+
+#if IO_CONCAT(__IO_PREFIX,trivial_io_bw)
+extern inline u8 readb_relaxed(const volatile void __iomem *addr)
+{
+ mb();
+ return __raw_readb(addr);
+}
+
+extern inline u16 readw_relaxed(const volatile void __iomem *addr)
+{
+ mb();
+ return __raw_readw(addr);
+}
+#endif
+
+#if IO_CONCAT(__IO_PREFIX,trivial_io_lq)
+extern inline u32 readl_relaxed(const volatile void __iomem *addr)
+{
+ mb();
+ return __raw_readl(addr);
+}
+
+extern inline u64 readq_relaxed(const volatile void __iomem *addr)
+{
+ mb();
+ return __raw_readq(addr);
+}
+#endif
+
+#define writeb_relaxed writeb
+#define writew_relaxed writew
+#define writel_relaxed writel
+#define writeq_relaxed writeq
/*
* String version of IO memory access ops:
diff --git a/arch/alpha/kernel/io.c b/arch/alpha/kernel/io.c
index c025a3e..938de13 100644
--- a/arch/alpha/kernel/io.c
+++ b/arch/alpha/kernel/io.c
@@ -16,21 +16,27 @@
unsigned int
ioread8(void __iomem *addr)
{
- unsigned int ret = IO_CONCAT(__IO_PREFIX,ioread8)(addr);
+ unsigned int ret;
+ mb();
+ ret = IO_CONCAT(__IO_PREFIX,ioread8)(addr);
mb();
return ret;
}
unsigned int ioread16(void __iomem *addr)
{
- unsigned int ret = IO_CONCAT(__IO_PREFIX,ioread16)(addr);
+ unsigned int ret;
+ mb();
+ ret = IO_CONCAT(__IO_PREFIX,ioread16)(addr);
mb();
return ret;
}
unsigned int ioread32(void __iomem *addr)
{
- unsigned int ret = IO_CONCAT(__IO_PREFIX,ioread32)(addr);
+ unsigned int ret;
+ mb();
+ ret = IO_CONCAT(__IO_PREFIX,ioread32)(addr);
mb();
return ret;
}
@@ -148,28 +154,36 @@
u8 readb(const volatile void __iomem *addr)
{
- u8 ret = __raw_readb(addr);
+ u8 ret;
+ mb();
+ ret = __raw_readb(addr);
mb();
return ret;
}
u16 readw(const volatile void __iomem *addr)
{
- u16 ret = __raw_readw(addr);
+ u16 ret;
+ mb();
+ ret = __raw_readw(addr);
mb();
return ret;
}
u32 readl(const volatile void __iomem *addr)
{
- u32 ret = __raw_readl(addr);
+ u32 ret;
+ mb();
+ ret = __raw_readl(addr);
mb();
return ret;
}
u64 readq(const volatile void __iomem *addr)
{
- u64 ret = __raw_readq(addr);
+ u64 ret;
+ mb();
+ ret = __raw_readq(addr);
mb();
return ret;
}
@@ -207,6 +221,38 @@
EXPORT_SYMBOL(writel);
EXPORT_SYMBOL(writeq);
+/*
+ * The _relaxed functions must be ordered w.r.t. each other, but they don't
+ * have to be ordered w.r.t. other memory accesses.
+ */
+u8 readb_relaxed(const volatile void __iomem *addr)
+{
+ mb();
+ return __raw_readb(addr);
+}
+
+u16 readw_relaxed(const volatile void __iomem *addr)
+{
+ mb();
+ return __raw_readw(addr);
+}
+
+u32 readl_relaxed(const volatile void __iomem *addr)
+{
+ mb();
+ return __raw_readl(addr);
+}
+
+u64 readq_relaxed(const volatile void __iomem *addr)
+{
+ mb();
+ return __raw_readq(addr);
+}
+
+EXPORT_SYMBOL(readb_relaxed);
+EXPORT_SYMBOL(readw_relaxed);
+EXPORT_SYMBOL(readl_relaxed);
+EXPORT_SYMBOL(readq_relaxed);
/*
* Read COUNT 8-bit bytes from port PORT into memory starting at SRC.
diff --git a/arch/alpha/kernel/osf_sys.c b/arch/alpha/kernel/osf_sys.c
index 94e4cde..d5367a1 100644
--- a/arch/alpha/kernel/osf_sys.c
+++ b/arch/alpha/kernel/osf_sys.c
@@ -677,7 +677,7 @@
default:
error = -EOPNOTSUPP;
break;
- };
+ }
return error;
}
diff --git a/arch/alpha/kernel/pci_iommu.c b/arch/alpha/kernel/pci_iommu.c
index 7f1925a..8103790 100644
--- a/arch/alpha/kernel/pci_iommu.c
+++ b/arch/alpha/kernel/pci_iommu.c
@@ -638,7 +638,7 @@
while (sg+1 < end && (int) sg[1].dma_address == -1) {
size += sg[1].length;
- sg++;
+ sg = sg_next(sg);
}
npages = iommu_num_pages(paddr, size, PAGE_SIZE);
diff --git a/arch/alpha/kernel/setup.c b/arch/alpha/kernel/setup.c
index 53520f8..916e42d 100644
--- a/arch/alpha/kernel/setup.c
+++ b/arch/alpha/kernel/setup.c
@@ -253,7 +253,7 @@
/* Fix up for the Jensen's queer RTC placement. */
standard_io_resources[0].start = RTC_PORT(0);
- standard_io_resources[0].end = RTC_PORT(0) + 0x10;
+ standard_io_resources[0].end = RTC_PORT(0) + 0x0f;
for (i = 0; i < ARRAY_SIZE(standard_io_resources); ++i)
request_resource(io, standard_io_resources+i);
@@ -479,7 +479,7 @@
#ifndef alpha_using_srm
/* Assume that we've booted from SRM if we haven't booted from MILO.
Detect the later by looking for "MILO" in the system serial nr. */
- alpha_using_srm = strncmp((const char *)hwrpb->ssn, "MILO", 4) != 0;
+ alpha_using_srm = !str_has_prefix((const char *)hwrpb->ssn, "MILO");
#endif
#ifndef alpha_using_qemu
/* Similarly, look for QEMU. */
@@ -1425,6 +1425,7 @@
static void *
c_next(struct seq_file *f, void *v, loff_t *pos)
{
+ (*pos)++;
return NULL;
}
diff --git a/arch/alpha/kernel/sys_eiger.c b/arch/alpha/kernel/sys_eiger.c
index bf99dcf..aea8a54 100644
--- a/arch/alpha/kernel/sys_eiger.c
+++ b/arch/alpha/kernel/sys_eiger.c
@@ -175,7 +175,7 @@
case 0x03: bridge_count = 2; break; /* 2 */
case 0x07: bridge_count = 3; break; /* 3 */
case 0x0f: bridge_count = 4; break; /* 4 */
- };
+ }
slot = PCI_SLOT(dev->devfn);
while (dev->bus->self) {
