drivers: ddr: altera: Fix integer overflow during size calculation

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.ravulapalli@altera.com>
Reviewed-by: Tien Fong Chee <tien.fong.chee@altera.com>
This commit is contained in:
Naresh Kumar Ravulapalli
2025-03-07 02:28:51 -08:00
committed by Tien Fong Chee
parent cde0050618
commit c889ca7ccf

View File

@@ -249,7 +249,7 @@ phys_size_t sdram_calculate_size(struct altera_sdram_plat *plat)
DRAMADDRW_CFG_ROW_ADDR_WIDTH(dramaddrw) + DRAMADDRW_CFG_ROW_ADDR_WIDTH(dramaddrw) +
DRAMADDRW_CFG_COL_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)); DDR_HMC_DDRIOCTRL_IOSIZE_MSK));
return size; return size;