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| author |   Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-15 12:11:48 -0700 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2021-09-15 12:11:48 -0700 |
| commit | d6efd3f18763ac84098fa318742cd2a3bfdf4d72 (patch) | |
| tree | 3369fa7a752f9793166f93191588b4fb266b20fa /drivers | |
| parent | tools/bootconfig: Define memblock_free_ptr() to fix build error (diff) | |
| parent | alpha: Use absolute_pointer to define COMMAND_LINE (diff) | |
| download | linux-dev-d6efd3f18763ac84098fa318742cd2a3bfdf4d72.tar.xz linux-dev-d6efd3f18763ac84098fa318742cd2a3bfdf4d72.zip | |
Merge branch 'absolute-pointer' (patches from Guenter)
Merge absolute_pointer macro series from Guenter Roeck:
"Kernel test builds currently fail for several architectures with error
messages such as the following.
drivers/net/ethernet/i825xx/82596.c: In function 'i82596_probe':
arch/m68k/include/asm/string.h:72:25: error:
'__builtin_memcpy' reading 6 bytes from a region of size 0
[-Werror=stringop-overread]
Such warnings may be reported by gcc 11.x for string and memory
operations on fixed addresses if gcc's builtin functions are used for
those operations.
This series introduces absolute_pointer() to fix the problem.
absolute_pointer() disassociates a pointer from its originating symbol
type and context, and thus prevents gcc from making assumptions about
pointers passed to memory operations"
* emailed patches from Guenter Roeck <linux@roeck-us.net>:
alpha: Use absolute_pointer to define COMMAND_LINE
alpha: Move setup.h out of uapi
net: i825xx: Use absolute_pointer for memcpy from fixed memory location
compiler.h: Introduce absolute_pointer macro
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/i825xx/82596.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/ethernet/i825xx/82596.c b/drivers/net/ethernet/i825xx/82596.c index b8a40146b895..b482f6f633bd 100644 --- a/drivers/net/ethernet/i825xx/82596.c +++ b/drivers/net/ethernet/i825xx/82596.c @@ -1144,7 +1144,7 @@ static struct net_device * __init i82596_probe(void) err = -ENODEV; goto out; } - memcpy(eth_addr, (void *) 0xfffc1f2c, ETH_ALEN); /* YUCK! Get addr from NOVRAM */ + memcpy(eth_addr, absolute_pointer(0xfffc1f2c), ETH_ALEN); /* YUCK! Get addr from NOVRAM */ dev->base_addr = MVME_I596_BASE; dev->irq = (unsigned) MVME16x_IRQ_I596; goto found; |