[PATCH] drivers: ddr: altera: Fix integer overflow during size calculation

[Naresh Kumar Ravulapalli]

Data structure, dramaddrw, is defined as u32. Compiler performs
32-bit arithmetic and logic operations on this data structure. Fix
is provided to avoid integer overflow while performing shifting
operations greater than 32-bit.

Signed-off-by: Naresh Kumar Ravulapalli <nareshkumar.ravulapa...@altera.com>
---
 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 c8c9211adc..75c6de1e4e 100644
--- a/drivers/ddr/altera/sdram_soc64.c
+++ b/drivers/ddr/altera/sdram_soc64.c
@@ -249,7 +249,7 @@ 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) &
                        DDR_HMC_DDRIOCTRL_IOSIZE_MSK));
 
        return size;
-- 
2.35.3