linux-kernel - [PATCH 4.20 150/183] clk: at91: fix at91sam9x5 peripheral clock number

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Message-Id: <20190225195120.284923383@linuxfoundation.org>
Date:   Mon, 25 Feb 2019 22:12:03 +0100
From:   Greg Kroah-Hartman <gregkh@...uxfoundation.org>
To:     linux-kernel@...r.kernel.org
Cc:     Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        stable@...r.kernel.org,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        Nicolas Ferre <nicolas.ferre@...rochip.com>,
        Stephen Boyd <sboyd@...nel.org>
Subject: [PATCH 4.20 150/183] clk: at91: fix at91sam9x5 peripheral clock number

4.20-stable review patch.  If anyone has any objections, please let me know.

------------------

From: Alexandre Belloni <alexandre.belloni@...tlin.com>

commit 1b328a2e095a009518ebac05e937cc0fc242fede upstream.

nck() looks at the last id in an array and unfortunately,
at91sam9x35_periphck has a sentinel, hence the id is 0 and the calculated
number of peripheral clocks is 1 instead of a maximum of 31.

Fixes: 1eabdc2f9dd8 ("clk: at91: add at91sam9x5 PMCs driver")
Signed-off-by: Alexandre Belloni <alexandre.belloni@...tlin.com>
Acked-by: Nicolas Ferre <nicolas.ferre@...rochip.com>
Cc: <stable@...r.kernel.org> # v4.20+
Signed-off-by: Stephen Boyd <sboyd@...nel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@...uxfoundation.org>

---
 drivers/clk/at91/at91sam9x5.c |    3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

--- a/drivers/clk/at91/at91sam9x5.c
+++ b/drivers/clk/at91/at91sam9x5.c
@@ -144,8 +144,7 @@ static void __init at91sam9x5_pmc_setup(
 		return;
 
 	at91sam9x5_pmc = pmc_data_allocate(PMC_MAIN + 1,
-					   nck(at91sam9x5_systemck),
-					   nck(at91sam9x35_periphck), 0);
+					   nck(at91sam9x5_systemck), 31, 0);
 	if (!at91sam9x5_pmc)
 		return;