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Commit f3218eb3 authored by Xiaonian Wang's avatar Xiaonian Wang Committed by Subhash Jadavani
Browse files

mmc: core: fix the pointer cast of freq_table 



The freq_table in devfreq_dev_profile is changed from
unsigned int to unsigned long. Fix the pointer cast here
by allocating a individual memory to pointer freq_table.

Change-Id: I2f7f17df0c3bd8de725daca1aa89572ce1911edd
Signed-off-by: default avatarXiaonian Wang <xiaonian@codeaurora.org>
parent 320a003d

drivers/mmc/core/core.c

+17 −2
Original line number Diff line number Diff line
@@ -617,12 +617,25 @@ static int mmc_devfreq_create_freq_table(struct mmc_host *host) 
	}



out:

	clk_scaling->devfreq_profile.freq_table = (unsigned long *)clk_scaling->freq_table;

	/**

	 * devfreq requires unsigned long type freq_table while the

	 * freq_table in clk_scaling is un32. Here allocates an individual

	 * memory space for it and release it when exit clock scaling.

	 */

	clk_scaling->devfreq_profile.freq_table =  kzalloc(

			clk_scaling->freq_table_sz *

			sizeof(*(clk_scaling->devfreq_profile.freq_table)),

			GFP_KERNEL);

	if (!clk_scaling->devfreq_profile.freq_table)

		return -ENOMEM;

	clk_scaling->devfreq_profile.max_state = clk_scaling->freq_table_sz;



	for (i = 0; i < clk_scaling->freq_table_sz; i++)

	for (i = 0; i < clk_scaling->freq_table_sz; i++) {

		clk_scaling->devfreq_profile.freq_table[i] =

			clk_scaling->freq_table[i];

		pr_debug("%s: freq[%d] = %u\n",

			mmc_hostname(host), i, clk_scaling->freq_table[i]);

	}



	return 0;

}
@@ -858,6 +871,8 @@ int mmc_exit_clk_scaling(struct mmc_host *host) 
		return err;

	}



	kfree(host->clk_scaling.devfreq_profile.freq_table);



	host->clk_scaling.devfreq = NULL;

	atomic_set(&host->clk_scaling.devfreq_abort, 1);

	pr_debug("%s: devfreq was removed\n", mmc_hostname(host));