[PATCH] tpm: fix error handling

[GitHub/mt8127/android_kernel_alcatel_ttab.git] / drivers / char / tpm / tpm_nsc.c

diff --git a/drivers/char/tpm/tpm_nsc.c b/drivers/char/tpm/tpm_nsc.c
index 26287aace87db5376bd7a48b18d37ba03564937f..608f73071bef91acbdbcb93d6bf17a7527d9a26a 100644 (file)
--- a/drivers/char/tpm/tpm_nsc.c
+++ b/drivers/char/tpm/tpm_nsc.c
@@ -284,7 +284,7 @@ static struct device_driver nsc_drv = {
 static int __init init_nsc(void)
 {
        int rc = 0;
-       int lo, hi;
+       int lo, hi, err;
        int nscAddrBase = TPM_ADDR;
        struct tpm_chip *chip;
        unsigned long base;
@@ -297,7 +297,9 @@ static int __init init_nsc(void)
                        return -ENODEV;
        }
 
-       driver_register(&nsc_drv);
+       err = driver_register(&nsc_drv);
+       if (err)
+               return err;
 
        hi = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_HI);
        lo = tpm_read_index(nscAddrBase, TPM_NSC_BASE0_LO);