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authorVictor Kamensky <victor.kamensky@linaro.org>2013-10-15 21:50:34 -0700
committerBen Dooks <ben.dooks@codethink.co.uk>2013-10-19 20:46:36 +0100
commitfdb07aee0b2b9d7d1893c97f5ce79ec355caaf1f (patch)
tree0f2e04f0717a87d81855da31f89d8d455d38c352 /drivers/bus
parenta1af3474487cc3b8731b990dceac6b6aad7f3ed8 (diff)
downloadop-kernel-dev-fdb07aee0b2b9d7d1893c97f5ce79ec355caaf1f.zip
op-kernel-dev-fdb07aee0b2b9d7d1893c97f5ce79ec355caaf1f.tar.gz
ARM: cci driver need big endian fixes in asm code
cci_enable_port_for_self written in asm and it works with h/w registers that are in little endian format. When run in big endian mode it needs byteswaped constants before/after it writes/reads to/from such registers Signed-off-by: Victor Kamensky <victor.kamensky@linaro.org> Acked-by: Nicolas Pitre <nico@linaro.org> Signed-off-by: Ben Dooks <ben.dooks@codethink.co.uk>
Diffstat (limited to 'drivers/bus')
-rw-r--r--drivers/bus/arm-cci.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/drivers/bus/arm-cci.c b/drivers/bus/arm-cci.c
index 2009266..2e6c275 100644
--- a/drivers/bus/arm-cci.c
+++ b/drivers/bus/arm-cci.c
@@ -280,7 +280,7 @@ asmlinkage void __naked cci_enable_port_for_self(void)
/* Enable the CCI port */
" ldr r0, [r0, %[offsetof_port_phys]] \n"
-" mov r3, #"__stringify(CCI_ENABLE_REQ)" \n"
+" mov r3, %[cci_enable_req]\n"
" str r3, [r0, #"__stringify(CCI_PORT_CTRL)"] \n"
/* poll the status reg for completion */
@@ -288,7 +288,7 @@ asmlinkage void __naked cci_enable_port_for_self(void)
" ldr r0, [r1] \n"
" ldr r0, [r0, r1] @ cci_ctrl_base \n"
"4: ldr r1, [r0, #"__stringify(CCI_CTRL_STATUS)"] \n"
-" tst r1, #1 \n"
+" tst r1, %[cci_control_status_bits] \n"
" bne 4b \n"
" mov r0, #0 \n"
@@ -301,6 +301,8 @@ asmlinkage void __naked cci_enable_port_for_self(void)
"7: .word cci_ctrl_phys - . \n"
: :
[sizeof_cpu_port] "i" (sizeof(cpu_port)),
+ [cci_enable_req] "i" cpu_to_le32(CCI_ENABLE_REQ),
+ [cci_control_status_bits] "i" cpu_to_le32(1),
#ifndef __ARMEB__
[offsetof_cpu_port_mpidr_lsb] "i" (offsetof(struct cpu_port, mpidr)),
#else
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