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crypto: ccp - Use int type to store negative error codes

Change the 'ret' variable in __sev_do_cmd_locked() from unsigned int to
int, as it needs to store negative error codes.

No effect on runtime.

Signed-off-by: Qianfeng Rong <rongqianfeng@vivo.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: Herbert Xu <herbert@gondor.apana.org.au>

authored by

Qianfeng Rong and committed by
Herbert Xu e002780c 2b0dc40a

+2 -1
+2 -1
drivers/crypto/ccp/sev-dev.c
··· 848 848 struct sev_device *sev; 849 849 unsigned int cmdbuff_hi, cmdbuff_lo; 850 850 unsigned int phys_lsb, phys_msb; 851 - unsigned int reg, ret = 0; 851 + unsigned int reg; 852 852 void *cmd_buf; 853 853 int buf_len; 854 + int ret = 0; 854 855 855 856 if (!psp || !psp->sev_data) 856 857 return -ENODEV;