clk: tegra: Register the proper number of resets

The number of resets controls is 32 times the number of peripheral
register banks rather than 32 times the number of clocks. This reduces
(drastically) the number of reset controls registered from 10080 (315
clocks * 32) to 224 (6 peripheral register banks * 32).

This also fixes a potential crash because trying to use any of the
excess reset controls (224-10079) would have caused accesses beyond
the array bounds of the peripheral register banks definition array.

Cc: Peter De Schrijver <pdeschrijver@nvidia.com>
Cc: Prashant Gaikwad <pgaikwad@nvidia.com>
Fixes: 6d5b988e7dc5 ("clk: tegra: implement a reset driver")
Cc: stable@vger.kernel.org # 3.14+
Signed-off-by: Thierry Reding <treding@nvidia.com>

diff --git a/drivers/clk/tegra/clk.c b/drivers/clk/tegra/clk.c
index 9ddb7547cb431b4b234d5ec6a41fba457abc2678..7a1df61847fc82c37609f8800859da1c476a167e 100644 (file)
--- a/drivers/clk/tegra/clk.c
+++ b/drivers/clk/tegra/clk.c
@@ -272,7 +272,7 @@ void __init tegra_add_of_provider(struct device_node *np)
        of_clk_add_provider(np, of_clk_src_onecell_get, &clk_data);
 
        rst_ctlr.of_node = np;
-       rst_ctlr.nr_resets = clk_num * 32;
+       rst_ctlr.nr_resets = periph_banks * 32;
        reset_controller_register(&rst_ctlr);
 }