From: Tanmay Kathpalia tanmay.kathpalia@altera.com

A Partial Region Controller can be connected to one or more Freeze Bridge. Each Freeze Bridge has an illegal_request bit represented in the freeze_illegal_request register. Thus, instead of just set to clear the illegal_request bit for first Freeze Bridge, we need to ensure the set to clear action is applied to which ever Freeze Bridge that has occurrence of illegal request.

Fixes: ca24a648f535 ("fpga: add altera freeze bridge support") Cc: stable@vger.kernel.org

Signed-off-by: Chiau Ee Chew chiau.ee.chew@intel.com Signed-off-by: Tanmay Kathpalia tanmay.kathpalia@altera.com --- drivers/fpga/altera-freeze-bridge.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/drivers/fpga/altera-freeze-bridge.c b/drivers/fpga/altera-freeze-bridge.c index 594693ff786e..23e8b2b54355 100644 --- a/drivers/fpga/altera-freeze-bridge.c +++ b/drivers/fpga/altera-freeze-bridge.c @@ -52,7 +52,7 @@ static int altera_freeze_br_req_ack(struct altera_freeze_br_data *priv, if (illegal) { dev_err(dev, "illegal request detected 0x%x", illegal);

- writel(1, csr_illegal_req_addr); + writel(illegal, csr_illegal_req_addr);

illegal = readl(csr_illegal_req_addr); if (illegal)