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Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc

Browse source 
Pull sparc updates from David Miller:
 "A host of mall cleanups and adjustments that have accumulated while I
  was away, nothing major"

* git://git.kernel.org/pub/scm/linux/kernel/git/davem/sparc: (26 commits)
  sparc: make xchg() into a statement expression
  sparc64: Use arch_validate_flags() to validate ADI flag
  sparc32: Fix comparing pointer to 0 coccicheck warning
  sparc: fix led.c driver when PROC_FS is not enabled
  sparc: Fix handling of page table constructor failure
  sparc64: only select COMPAT_BINFMT_ELF if BINFMT_ELF is set
  tty: hvcs: Drop unnecessary if block
  tty: vcc: Drop unnecessary if block
  tty: vcc: Drop impossible to hit WARN_ON
  sparc: sparc64_defconfig: add necessary configs for qemu
  sparc64: switch defconfig from the legacy ide driver to libata
  sparc32: Preserve clone syscall flags argument for restarts due to signals
  sparc32: Limit memblock allocation to low memory
  sparc: Replace test_ti_thread_flag() with test_tsk_thread_flag()
  sbus: char: Remove meaningless jump label out_free
  sparc32: signal: Fix stack trampoline for RT signals
  sparc: remove SA_STATIC_ALLOC macro definition
  sparc: use for_each_child_of_node() macro
  sparc: Use fallthrough pseudo-keyword
  sparc32: srmmu: improve type safety of __nocache_fix()
  ...
This commit is contained in:
Linus Torvalds 2021-02-23 15:09:53 -08:00
commit 6dd580b93d
19 changed files with 75 additions and 75 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

2
arch/sparc/Kconfig
View file

@ -175,7 +175,7 @@ config SMP
Management" code will be disabled if you say Y here.
See also <file:Documentation/admin-guide/lockup-watchdogs.rst> and the SMP-HOWTO
available at <http://www.tldp.org/docs.html#howto>.
available at <https://www.tldp.org/docs.html#howto>.
If you don't know what to do here, say N.

4
arch/sparc/boot/piggyback.c
View file

@ -154,6 +154,10 @@ static off_t get_hdrs_offset(int kernelfd, const char *filename)
offset -= LOOKBACK;
/* skip a.out header */
offset += AOUT_TEXT_OFFSET;
if (offset < 0) {
errno = -EINVAL;
die("Calculated a negative offset, probably elftoaout generated an invalid image. Did you use a recent elftoaout ?");
}
if (lseek(kernelfd, offset, SEEK_SET) < 0)
die("lseek");
if (read(kernelfd, buffer, BUFSIZE) != BUFSIZE)

11
arch/sparc/configs/sparc64_defconfig
View file

@ -65,9 +65,8 @@ CONFIG_CDROM_PKTCDVD=m
CONFIG_CDROM_PKTCDVD_WCACHE=y
CONFIG_ATA_OVER_ETH=m
CONFIG_SUNVDC=m
CONFIG_IDE=y
CONFIG_BLK_DEV_IDECD=y
CONFIG_BLK_DEV_ALI15X3=y
CONFIG_ATA=y
CONFIG_PATA_ALI=y
CONFIG_RAID_ATTRS=m
CONFIG_SCSI=y
CONFIG_BLK_DEV_SD=y
@ -235,3 +234,9 @@ CONFIG_CRYPTO_TWOFISH=m
CONFIG_CRC16=m
CONFIG_LIBCRC32C=m
CONFIG_VCC=m
CONFIG_ATA=y
CONFIG_PATA_CMD64X=y
CONFIG_HAPPYMEAL=y
CONFIG_IP_PNP=y
CONFIG_IP_PNP_DHCP=y
CONFIG_DEVTMPFS=y

2
arch/sparc/include/asm/backoff.h
View file

@ -18,7 +18,7 @@
*
* When we spin, we try to use an operation that will cause the
* current cpu strand to block, and therefore make the core fully
* available to any other other runnable strands. There are two
* available to any other runnable strands. There are two
* options, based upon cpu capabilities.
*
* On all cpus prior to SPARC-T4 we do three dummy reads of the

2
arch/sparc/include/asm/cmpxchg_32.h
View file

@ -25,7 +25,7 @@ static inline unsigned long __xchg(unsigned long x, __volatile__ void * ptr, int
return x;
}
#define xchg(ptr,x) ((__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr))))
#define xchg(ptr,x) ({(__typeof__(*(ptr)))__xchg((unsigned long)(x),(ptr),sizeof(*(ptr)));})
/* Emulate cmpxchg() the same way we emulate atomics,
* by hashing the object address and indexing into an array

60
arch/sparc/include/asm/mman.h
View file

@ -57,36 +57,40 @@ static inline int sparc_validate_prot(unsigned long prot, unsigned long addr)
{
if (prot & ~(PROT_READ | PROT_WRITE | PROT_EXEC | PROT_SEM | PROT_ADI))
return 0;
if (prot & PROT_ADI) {
if (!adi_capable())
return 0;
if (addr) {
struct vm_area_struct *vma;
vma = find_vma(current->mm, addr);
if (vma) {
/* ADI can not be enabled on PFN
* mapped pages
*/
if (vma->vm_flags & (VM_PFNMAP | VM_MIXEDMAP))
return 0;
/* Mergeable pages can become unmergeable
* if ADI is enabled on them even if they
* have identical data on them. This can be
* because ADI enabled pages with identical
* data may still not have identical ADI
* tags on them. Disallow ADI on mergeable
* pages.
*/
if (vma->vm_flags & VM_MERGEABLE)
return 0;
}
}
}
return 1;
}
#define arch_validate_flags(vm_flags) arch_validate_flags(vm_flags)
/* arch_validate_flags() - Ensure combination of flags is valid for a
* VMA.
*/
static inline bool arch_validate_flags(unsigned long vm_flags)
{
/* If ADI is being enabled on this VMA, check for ADI
* capability on the platform and ensure VMA is suitable
* for ADI
*/
if (vm_flags & VM_SPARC_ADI) {
if (!adi_capable())
return false;
/* ADI can not be enabled on PFN mapped pages */
if (vm_flags & (VM_PFNMAP | VM_MIXEDMAP))
return false;
/* Mergeable pages can become unmergeable
* if ADI is enabled on them even if they
* have identical data on them. This can be
* because ADI enabled pages with identical
* data may still not have identical ADI
* tags on them. Disallow ADI on mergeable
* pages.
*/
if (vm_flags & VM_MERGEABLE)
return false;
}
return true;
}
#endif /* CONFIG_SPARC64 */
#endif /* __ASSEMBLY__ */

2
arch/sparc/include/asm/pgtsrmmu.h
View file

@ -113,7 +113,7 @@ extern unsigned long last_valid_pfn;
extern void *srmmu_nocache_pool;
#define __nocache_pa(VADDR) (((unsigned long)VADDR) - SRMMU_NOCACHE_VADDR + __pa((unsigned long)srmmu_nocache_pool))
#define __nocache_va(PADDR) (__va((unsigned long)PADDR) - (unsigned long)srmmu_nocache_pool + SRMMU_NOCACHE_VADDR)
#define __nocache_fix(VADDR) __va(__nocache_pa(VADDR))
#define __nocache_fix(VADDR) ((__typeof__(VADDR))__va(__nocache_pa(VADDR)))
/* Accessing the MMU control register. */
unsigned int srmmu_get_mmureg(void);

12
arch/sparc/include/asm/signal.h
View file

@ -9,18 +9,6 @@
#include <uapi/asm/signal.h>
#ifndef __ASSEMBLY__
/*
* DJHR
* SA_STATIC_ALLOC is used for the sparc32 system to indicate that this
* interrupt handler's irq structure should be statically allocated
* by the request_irq routine.
* The alternative is that arch/sparc/kernel/irq.c has carnal knowledge
* of interrupt usage and that sucks. Also without a flag like this
* it may be possible for the free_irq routine to attempt to free
* statically allocated data.. which is NOT GOOD.
*
*/
#define SA_STATIC_ALLOC 0x8000
#define __ARCH_HAS_KA_RESTORER
#define __ARCH_HAS_SA_RESTORER

8
arch/sparc/kernel/entry.S
View file

@ -994,7 +994,7 @@ do_syscall:
andcc %l5, _TIF_SYSCALL_TRACE, %g0
mov %i4, %o4
bne linux_syscall_trace
mov %i0, %l5
mov %i0, %l6
2:
call %l7
mov %i5, %o5
@ -1003,16 +1003,15 @@ do_syscall:
st %o0, [%sp + STACKFRAME_SZ + PT_I0]
ret_sys_call:
ld [%curptr + TI_FLAGS], %l6
ld [%curptr + TI_FLAGS], %l5
cmp %o0, -ERESTART_RESTARTBLOCK
ld [%sp + STACKFRAME_SZ + PT_PSR], %g3
set PSR_C, %g2
bgeu 1f
andcc %l6, _TIF_SYSCALL_TRACE, %g0
andcc %l5, _TIF_SYSCALL_TRACE, %g0
/* System call success, clear Carry condition code. */
andn %g3, %g2, %g3
clr %l6
st %g3, [%sp + STACKFRAME_SZ + PT_PSR]
bne linux_syscall_trace2
ld [%sp + STACKFRAME_SZ + PT_NPC], %l1 /* pc = npc */
@ -1027,7 +1026,6 @@ ret_sys_call:
sub %g0, %o0, %o0
or %g3, %g2, %g3
st %o0, [%sp + STACKFRAME_SZ + PT_I0]
mov 1, %l6
st %g3, [%sp + STACKFRAME_SZ + PT_PSR]
bne linux_syscall_trace2
ld [%sp + STACKFRAME_SZ + PT_NPC], %l1 /* pc = npc */

2
arch/sparc/kernel/led.c
View file

@ -50,6 +50,7 @@ static void led_blink(struct timer_list *unused)
add_timer(&led_blink_timer);
}
#ifdef CONFIG_PROC_FS
static int led_proc_show(struct seq_file *m, void *v)
{
if (get_auxio() & AUXIO_LED)
@ -111,6 +112,7 @@ static const struct proc_ops led_proc_ops = {
.proc_release = single_release,
.proc_write = led_proc_write,
};
#endif
static struct proc_dir_entry *led;

3
arch/sparc/kernel/pci.c
View file

@ -552,9 +552,8 @@ static void pci_of_scan_bus(struct pci_pbm_info *pbm,
pci_info(bus, "scan_bus[%pOF] bus no %d\n",
node, bus->number);
child = NULL;
prev_devfn = -1;
while ((child = of_get_next_child(node, child)) != NULL) {
for_each_child_of_node(node, child) {
if (ofpci_verbose)
pci_info(bus, " * %pOF\n", child);
reg = of_get_property(child, "reg", &reglen);

2
arch/sparc/kernel/process_32.c
View file

@ -183,7 +183,7 @@ void exit_thread(struct task_struct *tsk)
#ifndef CONFIG_SMP
if (last_task_used_math == tsk) {
#else
if (test_ti_thread_flag(task_thread_info(tsk), TIF_USEDFPU)) {
if (test_tsk_thread_flag(tsk, TIF_USEDFPU)) {
#endif
/* Keep process from leaving FPU in a bogon state. */
put_psr(get_psr() | PSR_EF);

2
arch/sparc/kernel/rtrap_32.S
View file

@ -75,7 +75,7 @@ signal_p:
ld [%sp + STACKFRAME_SZ + PT_PSR], %t_psr
mov %g2, %o2
mov %l5, %o1
mov %l6, %o1
call do_notify_resume
add %sp, STACKFRAME_SZ, %o0 ! pt_regs ptr

4
arch/sparc/kernel/signal_32.c
View file

@ -400,8 +400,8 @@ static int setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs,
else {
regs->u_regs[UREG_I7] = (unsigned long)(&(sf->insns[0]) - 2);
/* mov __NR_sigreturn, %g1 */
err |= __put_user(0x821020d8, &sf->insns[0]);
/* mov __NR_rt_sigreturn, %g1 */
err |= __put_user(0x82102065, &sf->insns[0]);
/* t 0x10 */
err |= __put_user(0x91d02010, &sf->insns[1]);

6
arch/sparc/kernel/viohs.c
View file

@ -428,7 +428,7 @@ static int process_dreg_info(struct vio_driver_state *vio,
struct vio_dring_register *pkt)
{
struct vio_dring_state *dr;
int i, len;
int i;
viodbg(HS, "GOT DRING_REG INFO ident[%llx] "
"ndesc[%u] dsz[%u] opt[0x%x] ncookies[%u]\n",
@ -482,9 +482,7 @@ static int process_dreg_info(struct vio_driver_state *vio,
pkt->num_descr, pkt->descr_size, pkt->options,
pkt->num_cookies);
len = (sizeof(*pkt) +
(dr->ncookies * sizeof(struct ldc_trans_cookie)));
if (send_ctrl(vio, &pkt->tag, len) < 0)
if (send_ctrl(vio, &pkt->tag, struct_size(pkt, cookies, dr->ncookies)) < 0)
goto send_nack;
vio->dr_state |= VIO_DR_STATE_RXREG;

1
arch/sparc/lib/memset.S
View file

@ -142,6 +142,7 @@ __bzero:
ZERO_LAST_BLOCKS(%o0, 0x48, %g2)
ZERO_LAST_BLOCKS(%o0, 0x08, %g2)
13:
EXT(12b, 13b, 21f)
be 8f
andcc %o1, 4, %g0

3
arch/sparc/mm/init_32.c
View file

@ -197,6 +197,9 @@ unsigned long __init bootmem_init(unsigned long *pages_avail)
size = memblock_phys_mem_size() - memblock_reserved_size();
*pages_avail = (size >> PAGE_SHIFT) - high_pages;
/* Only allow low memory to be allocated via memblock allocation */
memblock_set_current_limit(max_low_pfn << PAGE_SHIFT);
return max_pfn;
}

20
arch/sparc/mm/srmmu.c
View file

@ -351,7 +351,7 @@ pgtable_t pte_alloc_one(struct mm_struct *mm)
pte_t *ptep;
struct page *page;
if ((ptep = pte_alloc_one_kernel(mm)) == 0)
if (!(ptep = pte_alloc_one_kernel(mm)))
return NULL;
page = pfn_to_page(__nocache_pa((unsigned long)ptep) >> PAGE_SHIFT);
spin_lock(&mm->page_table_lock);
@ -689,7 +689,7 @@ static void __init srmmu_early_allocate_ptable_skeleton(unsigned long start,
pgdp = pgd_offset_k(start);
p4dp = p4d_offset(pgdp, start);
pudp = pud_offset(p4dp, start);
if (pud_none(*(pud_t *)__nocache_fix(pudp))) {
if (pud_none(*__nocache_fix(pudp))) {
pmdp = __srmmu_get_nocache(
SRMMU_PMD_TABLE_SIZE, SRMMU_PMD_TABLE_SIZE);
if (pmdp == NULL)
@ -698,7 +698,7 @@ static void __init srmmu_early_allocate_ptable_skeleton(unsigned long start,
pud_set(__nocache_fix(pudp), pmdp);
}
pmdp = pmd_offset(__nocache_fix(pudp), start);
if (srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) {
if (srmmu_pmd_none(*__nocache_fix(pmdp))) {
ptep = __srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
if (ptep == NULL)
early_pgtable_allocfail("pte");
@ -810,11 +810,11 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
p4dp = p4d_offset(pgdp, start);
pudp = pud_offset(p4dp, start);
if (what == 2) {
*(pgd_t *)__nocache_fix(pgdp) = __pgd(probed);
*__nocache_fix(pgdp) = __pgd(probed);
start += PGDIR_SIZE;
continue;
}
if (pud_none(*(pud_t *)__nocache_fix(pudp))) {
if (pud_none(*__nocache_fix(pudp))) {
pmdp = __srmmu_get_nocache(SRMMU_PMD_TABLE_SIZE,
SRMMU_PMD_TABLE_SIZE);
if (pmdp == NULL)
@ -822,13 +822,13 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
memset(__nocache_fix(pmdp), 0, SRMMU_PMD_TABLE_SIZE);
pud_set(__nocache_fix(pudp), pmdp);
}
pmdp = pmd_offset(__nocache_fix(pgdp), start);
pmdp = pmd_offset(__nocache_fix(pudp), start);
if (what == 1) {
*(pmd_t *)__nocache_fix(pmdp) = __pmd(probed);
start += PMD_SIZE;
continue;
}
if (srmmu_pmd_none(*(pmd_t *)__nocache_fix(pmdp))) {
if (srmmu_pmd_none(*__nocache_fix(pmdp))) {
ptep = __srmmu_get_nocache(PTE_SIZE, PTE_SIZE);
if (ptep == NULL)
early_pgtable_allocfail("pte");
@ -836,7 +836,7 @@ static void __init srmmu_inherit_prom_mappings(unsigned long start,
pmd_set(__nocache_fix(pmdp), ptep);
}
ptep = pte_offset_kernel(__nocache_fix(pmdp), start);
*(pte_t *)__nocache_fix(ptep) = __pte(probed);
*__nocache_fix(ptep) = __pte(probed);
start += PAGE_SIZE;
}
}
@ -850,7 +850,7 @@ static void __init do_large_mapping(unsigned long vaddr, unsigned long phys_base
unsigned long big_pte;
big_pte = KERNEL_PTE(phys_base >> 4);
*(pgd_t *)__nocache_fix(pgdp) = __pgd(big_pte);
*__nocache_fix(pgdp) = __pgd(big_pte);
}
/* Map sp_bank entry SP_ENTRY, starting at virtual address VBASE. */
@ -940,7 +940,7 @@ void __init srmmu_paging_init(void)
srmmu_ctx_table_phys = (ctxd_t *)__nocache_pa(srmmu_context_table);
for (i = 0; i < num_contexts; i++)
srmmu_ctxd_set((ctxd_t *)__nocache_fix(&srmmu_context_table[i]), srmmu_swapper_pg_dir);
srmmu_ctxd_set(__nocache_fix(&srmmu_context_table[i]), srmmu_swapper_pg_dir);
flush_cache_all();
srmmu_set_ctable_ptr((unsigned long)srmmu_ctx_table_phys);

4
drivers/sbus/char/display7seg.c
View file

@ -186,7 +186,7 @@ static int d7s_probe(struct platform_device *op)
p->regs = of_ioremap(&op->resource[0], 0, sizeof(u8), "d7s");
if (!p->regs) {
printk(KERN_ERR PFX "Cannot map chip registers\n");
goto out_free;
goto out;
}
err = misc_register(&d7s_miscdev);
@ -228,8 +228,6 @@ out:
out_iounmap:
of_iounmap(&op->resource[0], p->regs, sizeof(u8));
out_free:
goto out;
}