[PATCH v2 1/5] bus: mvebu: fix resource size handling

[Sebastian Hesselbarth]

A resource_size is defined as res->end - res->start + 1. Marvell
MBUS driver gets some ranges from DT as start and size but mis-calculates
end of range. This fixes 4 occurences of those mistakes.

Signed-off-by: Sebastian Hesselbarth <sebastian.hesselbarth at gmail.com>
Acked-by: Lucas Stach <l.stach at pengutronix.de>
---
Changelog:
v1->v2:
- none

Cc: barebox at lists.infradead.org
Cc: Antony Pavlov <antonynpavlov at gmail.com>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj at jcrosoft.com>
Cc: Lucas Stach <l.stach at pengutronix.de>
Cc: Thomas Petazzoni <thomas.petazzoni at free-electrons.com>
Cc: Ezequiel Garcia <ezequiel.garcia at free-electrons.com>
---
 drivers/bus/mvebu-mbus.c | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/drivers/bus/mvebu-mbus.c b/drivers/bus/mvebu-mbus.c
index 11e3777a6094..c67646f61722 100644
--- a/drivers/bus/mvebu-mbus.c
+++ b/drivers/bus/mvebu-mbus.c
@@ -187,7 +187,7 @@ static int mvebu_mbus_window_conflicts(struct mvebu_mbus_state *mbus,
 				       phys_addr_t base, size_t size,
 				       u8 target, u8 attr)
 {
-	u64 end = (u64)base + size;
+	u64 end = (u64)base + size - 1;
 	int win;
 
 	for (win = 0; win < mbus->soc->num_wins; win++) {
@@ -203,7 +203,7 @@ static int mvebu_mbus_window_conflicts(struct mvebu_mbus_state *mbus,
 		if (!enabled)
 			continue;
 
-		wend = wbase + wsize;
+		wend = wbase + wsize - 1;
 
 		/*
 		 * Check if the current window overlaps with the
@@ -661,7 +661,7 @@ static void mvebu_mbus_get_pcie_resources(struct device_node *np,
 					 reg, ARRAY_SIZE(reg));
 	if (!ret) {
 		mem->start = reg[0];
-		mem->end = mem->start + reg[1];
+		mem->end = mem->start + reg[1] - 1;
 		mem->flags = IORESOURCE_MEM;
 	}
 
@@ -669,7 +669,7 @@ static void mvebu_mbus_get_pcie_resources(struct device_node *np,
 					 reg, ARRAY_SIZE(reg));
 	if (!ret) {
 		io->start = reg[0];
-		io->end = io->start + reg[1];
+		io->end = io->start + reg[1] - 1;
 		io->flags = IORESOURCE_IO;
 	}
 }
-- 
2.0.0