To fix sparse warning of incorrect type in assignment
(different address space), added annotation __iomem to
vmem8 and modified direct reads with ioread8().
Signed-off-by: Tolga Ceylan <tolga.cey...@gmail.com>
---
drivers/staging/fbtft/fbtft-bus.c | 8 ++++----
1 file changed, 4 insertions(+), 4 deletions(-)
diff --git a/drivers/staging/fbtft/fbtft-bus.c
b/drivers/staging/fbtft/fbtft-bus.c
index 52af9cb..e0acd3f 100644
--- a/drivers/staging/fbtft/fbtft-bus.c
+++ b/drivers/staging/fbtft/fbtft-bus.c
@@ -184,7 +184,7 @@ EXPORT_SYMBOL(fbtft_write_vmem16_bus8);
/* 16 bit pixel over 9-bit SPI bus: dc + high byte, dc + low byte */
int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t offset, size_t len)
{
- u8 *vmem8;
+ u8 __iomem *vmem8;
u16 *txbuf16 = par->txbuf.buf;
size_t remain;
size_t to_copy;
@@ -212,12 +212,12 @@ int fbtft_write_vmem16_bus9(struct fbtft_par *par, size_t
offset, size_t len)
#ifdef __LITTLE_ENDIAN
for (i = 0; i < to_copy; i += 2) {
- txbuf16[i] = 0x0100 | vmem8[i+1];
- txbuf16[i+1] = 0x0100 | vmem8[i];
+ txbuf16[i] = 0x0100 | ioread8(vmem8 + i + 1);
+ txbuf16[i + 1] = 0x0100 | ioread8(vmem8 + i);
}
#else
for (i = 0; i < to_copy; i++)
- txbuf16[i] = 0x0100 | vmem8[i];
+ txbuf16[i] = 0x0100 | ioread8(vmem8 + i);
#endif
vmem8 = vmem8 + to_copy;
ret = par->fbtftops.write(par, par->txbuf.buf, to_copy*2);
--
2.3.7
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