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-rw-r--r--src/soc/intel/common/block/lpc/lpc_lib.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/src/soc/intel/common/block/lpc/lpc_lib.c b/src/soc/intel/common/block/lpc/lpc_lib.c
index 0fcf383ecb..b4b3d1bb52 100644
--- a/src/soc/intel/common/block/lpc/lpc_lib.c
+++ b/src/soc/intel/common/block/lpc/lpc_lib.c
@@ -88,7 +88,7 @@ void lpc_open_pmio_window(uint16_t base, uint16_t size)
window_size = MIN(size, LPC_LGIR_MAX_WINDOW_SIZE);
/* Window size must be a power of two for the AMASK to work. */
- alignment = 1 << (log2_ceil(window_size));
+ alignment = 1UL << (log2_ceil(window_size));
window_size = ALIGN_UP(window_size, alignment);
/* Address[15:2] in LGIR[15:12] and Mask[7:2] in LGIR[23:18]. */