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Commit 2bc445e2 authored by Shardar Shariff Md's avatar Shardar Shariff Md Committed by Wolfram Sang
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i2c: tegra: use atomic poll function during configuration 



Use readl_poll_timeout_atomic() function as *wait_for_config_load()
function can be called from interrupt context.

Signed-off-by: default avatarShardar Shariff Md <smohammed@nvidia.com>
Signed-off-by: default avatarWolfram Sang <wsa@the-dreams.de>
parent 89120d66

drivers/i2c/busses/i2c-tegra.c

+7 −2
Original line number Diff line number Diff line
@@ -457,8 +457,13 @@ static int tegra_i2c_wait_for_config_load(struct tegra_i2c_dev *i2c_dev) 
		reg_offset = tegra_i2c_reg_addr(i2c_dev, I2C_CONFIG_LOAD);

		addr = i2c_dev->base + reg_offset;

		i2c_writel(i2c_dev, I2C_MSTR_CONFIG_LOAD, I2C_CONFIG_LOAD);

		err = readl_poll_timeout(addr, val, val == 0, 1000,

					 I2C_CONFIG_LOAD_TIMEOUT);

		if (in_interrupt())

			err = readl_poll_timeout_atomic(addr, val, val == 0,

					1000, I2C_CONFIG_LOAD_TIMEOUT);

		else

			err = readl_poll_timeout(addr, val, val == 0,

					1000, I2C_CONFIG_LOAD_TIMEOUT);



		if (err) {

			dev_warn(i2c_dev->dev,

				 "timeout waiting for config load\n");