linux-kernel - [PATCH 2/2] FMC: show_sdb_tree: fix offset calculation

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Date:	Thu, 30 Jan 2014 13:05:20 +0100
From:	Alessandro Rubini <rubini@...dd.com>
To:	linux-kernel@...r.kernel.org
Cc:	Juan David Gonzalez Cobas <juan.david.gonzalez.cobas@...n.ch>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>
Subject: [PATCH 2/2] FMC: show_sdb_tree: fix offset calculation

The code reported wrong addresses in the sdb dumps.  All sdb addresses
are relative, but the code was adding the base address twice.  Bug
exposed by a gateware image with two bridge levels.

Thanks David for reporting the problem.

Signed-off-by: Alessandro Rubini <rubini@...dd.com>
Reported-by: Juan David Gonzalez Cobas <dcobas@...n.ch>
Tested-by: Juan David Gonzalez Cobas <dcobas@...n.ch>
---
 drivers/fmc/fmc-sdb.c |    7 ++-----
 1 files changed, 2 insertions(+), 5 deletions(-)

diff --git a/drivers/fmc/fmc-sdb.c b/drivers/fmc/fmc-sdb.c
index 79adc39..69f42d7 100644
--- a/drivers/fmc/fmc-sdb.c
+++ b/drivers/fmc/fmc-sdb.c
@@ -153,20 +153,17 @@ EXPORT_SYMBOL(fmc_reprogram);
 static void __fmc_show_sdb_tree(const struct fmc_device *fmc,
 				const struct sdb_array *arr)
 {
+	unsigned long base = arr->baseaddr;
 	int i, j, n = arr->len, level = arr->level;
-	const struct sdb_array *ap;
 
 	for (i = 0; i < n; i++) {
-		unsigned long base;
 		union  sdb_record *r;
 		struct sdb_product *p;
 		struct sdb_component *c;
 		r = &arr->record[i];
 		c = &r->dev.sdb_component;
 		p = &c->product;
-		base = 0;
-		for (ap = arr; ap; ap = ap->parent)
-			base += ap->baseaddr;
+
 		dev_info(&fmc->dev, "SDB: ");
 
 		for (j = 0; j < level; j++)
-- 
1.7.7.2
--
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