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pinctrl: renesas: checker: Fix off-by-one bug in drive register check

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[ Upstream commit 28e7f8ff90 ]

The GENMASK(h, l) macro creates a contiguous bitmask starting at bit
position @l and ending at position @h, inclusive.

This did not trigger any error checks, as the individual register fields
cover at most 3 of the 4 available bits.

Fixes: 08df16e07a ("pinctrl: sh-pfc: checker: Add drive strength register checks")
Signed-off-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://lore.kernel.org/r/8f82d6147fbe3367d4c83962480e97f58d9c96a2.1633615652.git.geert+renesas@glider.be
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Geert Uytterhoeven
2021-10-07 16:38:47 +02:00
committed by Greg Kroah-Hartman
parent 51bcffb395
commit 78238479b9
1 changed files with 1 additions and 1 deletions
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2
drivers/pinctrl/renesas/core.c
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@@ -890,7 +890,7 @@ static void __init sh_pfc_check_drive_reg(const struct sh_pfc_soc_info *info,
if (!field->pin && !field->offset && !field->size)
continue;
mask = GENMASK(field->offset + field->size, field->offset);
mask = GENMASK(field->offset + field->size - 1, field->offset);
if (mask & seen)
sh_pfc_err("drive_reg 0x%x: field %u overlap\n",
drive->reg, i);