On 8/30/22 08:42, Jit Loon Lim wrote:
From: Tien Fong Chee <[email protected]>
dramaddrw data structure are defined as u32. Compiler assume 32-bit
arithmetic on expression and the shifting operation to be done on a
32-bit value. So, the expression would overflow if the shifting
is more than 32-bit.
Signed-off-by: Tien Fong Chee <[email protected]>
---
drivers/ddr/altera/sdram_soc64.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/ddr/altera/sdram_soc64.c b/drivers/ddr/altera/sdram_soc64.c
index 9b1710c135..81ad02118b 100644
--- a/drivers/ddr/altera/sdram_soc64.c
+++ b/drivers/ddr/altera/sdram_soc64.c
@@ -246,7 +246,7 @@ phys_size_t sdram_calculate_size(struct altera_sdram_plat
*plat)
DRAMADDRW_CFG_ROW_ADDR_WIDTH(dramaddrw) +
DRAMADDRW_CFG_COL_ADDR_WIDTH(dramaddrw));
- size *= (2 << (hmc_ecc_readl(plat, DDRIOCTRL) &
+ size *= ((phys_size_t)2 << (hmc_ecc_readl(plat, DDRIOCTRL) &
What about using 2UL or 2ULL here, would that work too ?
